Because if you fought them every time it was warranted, you wouldn't have time for anything else.

There are quite a few of us who do not allow all that.
Unfortunately, ours are still not the loudest voices which are heard.

And yes, the media does allow the "proclamations of morality by christians" to
largely go unchallenged.

However, there are the odd exceptions.
Case in point, the outlets that point out that 45 putting Pence in charge of the
coronavirus "task force" is pretty ridiculous. Especially based on the fact that
Pence oversaw the largest HIV/AIDS outbreak in one region of his state while
he was governor. It's been reported how Pence is a repeated denier of scientific
facts.
So, there's that.

Overall though, it's like shouting into a tornado.

"Why do the nonreligious allow Christians"
ALLOW?
Since when did the hated minority gain the power and prestige to "allow" Christians anything?
2000+ years of tradition hammered into the societies head that Christianity is moral when it is not. It will take a concerted effort for decades or more to overcome such an ingrained tradition.

You don't allow a Christian. They seem to have the ability to both be forgiven and then go back to another challenging moral situation all the time. Remember "I'm not perfect - just forgiven." It's a game.

Possibly. The media is part of "The Establishment", and the establishment is happy to have a fanatic base.

The nonreligious are a minority and the voices of minorities are drowned out or ignored.

Who says they do? You fail to recognize that religious people are the vast majority in this country, but that they are si brainwashed that they do not listen and only see what they want to see. Haven't you seen the many videos from non believers like Hawkins, Hitchens, etcetera? Nobody "allows" anything, in fact, key arguments that you think are not used are definitelt used. One thing remains true, you can bring a thirsty mule to the river but you can't force that mule to drink.

Gender inequality and discrimination are root causes of violence against women, influenced by the historical and structural power imbalances between women and men which exist in varying degrees across all communities in the world.

A main cause of horrific gun violence in America: Republicans fight reasonable gun control. And the power of the NRA.

American citizens are all responsible for voting, protesting wrongs and contacting their legislators.

Don't blame non-religious people for being apathetic.

Since 18, I have been a strong, vocal Democrat. I am an atheist, anti-war, pro-gun control, environmentalist, support abortion rights, feminist and volunteer to help people in need.

Xians make all kinds of baseless claims about themselves, their Gawd, their faith, etc... Rather than call them out on all their bullshit -- a 24 hour a day job -- it's less time consuming to pick and choose the fights -- gay hate, superstition and ignorance, separation of church & state -- and simply ignore the silly stuff like "I'm more moral than you!.

Because they outnumber everyone else

IMO the media favors the Christians.

You can only take so much mental BS!!!

It just easier to turn the other cheek!!!

LOL!!!

It is just easier to look the other way and walk most times away from moronic stupid idiots.

They are so mentally deranged that they are indelibly imprinted with delusional mystical magical lust of self worth over you!!!

Hence, the need to preach their way through life as the only way to justify their very existence!!!

This may be the one great legacy of our current president. He seems to have taken it to far. He isnt subtle about the bigotry and hypocrisy of it and has exposed the true intentions. Espcially since he is such a very obvious cheating pornstar loving glutinous bully and they worship his racism.
He seems to have changed that conversation and taken that moral highground away for many people.

"Why do the nonreligious allow Christians to claim the moral high ground...?"

Christians are notoriously intolerant (and morally degenerate). Look what the German Christians were up to before and during WWII. American Christians are right behind them. That's why they elected Trump. Here's the famous picture of Madison Square Garden in 1939.

As for the media allowing these proclamations, they don't want their licenses yanked, frivolous lawsuits or staff threatened.

It doesn't go unchallenged. It's just that you cannot convince them that they are wrong.

Industrialization equals wealth, wealth is power; wealth purchases evil politicians, judges, and media outlets… When that degree of wealth & power are what you’re up against … it’s amazing Atheists aren’t being burned as ‘heretics’..

We’re on the right side of history ...but history hasn’t quite caught up..

I challenge it all the time, when I get into a rational conversation with a devout Christian about real issues, which is basically never.

I don’t know that they do, do they?

We don't let it go unchallenged. We challenge it all the time. What good does it do?
In fact, there's a direct correlation between degree of religiousness and all crime markers, not just homicide.
I think the crimes themselves may be acts of defiance and rebellion against their KIND of religiousness-- a sort of 'god rewards the virtuousness and penalizes the nonbelieving, so why should we help the wicked?'
It's the opposite of true Christianity and what a very religious country should look like.
Many people in the USA are very unhappy and desperate for love--what they get instead is selfishness and greed and self-serving hypocrisy.
No wonder homicide rates are high!

They just blame it on the "godless heathens". You'll need to come up with hard facts to show that it is the religious who commit most crimes.

Most of the media is owned and distributed by 1 of 6 companies.
Media is not about quality information any longer, it's about profit and protecting the status quo.

America is the most religious Christian country on the planet, more so than Vatican City. Basically, I think Americans need to believe in God because they can't believe in their President.

It's challenged, but it's ineffective in the end because non-believers do not have credibility with believers, and getting believers to see the truth, let alone tell the truth, about their hypocrisy is a tall order. People don't like to think or admit that they could be wrong about a 'truth' they have chosen to believe against all reason such as salvation, the afterlife, and all these things which are supposed to be their reward for submitting to a religion that is overwhelmingly a scam. Believers figure if these things are false, then is "killing/murder is immoral" false? Of course it isn't, but I can't tell you how many evangelicals have admitted that the only reason they don't kill, murder, rape, etc. is because they fear their imaginary god's retribution. They don't fear what the law or other men would do to them if they committed the crimes they want to commit (especially rape, for some reason they mourn the fact that they just can't rape any woman they want), they fear losing their spot in heaven if they committed any immoral act. This, at the end of the day, is not real human morality, and any decent human being can see this. Religion perverts morality and in a real ironic way reveals who is truly a decent human being and who isn't.

There is a difference in morality and a legal system. they can conflict. If a legal system has more control over a morality system then the legal system may impose imprisonment upon those that choose to follow their morality system rather than a controling legal system.

Morality - 1a: a moral discourse, statement, or lesson
ended his lecture with a trite morality
b: a literary or other imaginative work teaching a moral lesson
"Aesop's Fables" is famous as a morality.
2a: a doctrine or system of moral conduct
the basic law which an adequate morality ought to state
— Marjorie Grene
bmoralities plural : particular moral principles or rules of conduct
we were all brought up on one of these moralities
— Psychiatry
3: conformity to ideals of right human conduct
admitted the expediency of the law but questioned its morality
4: moral conduct : VIRTUE
morality today involves a responsible relationship toward the laws of the natural world

legal system -

le·​gal | \ ˈlē-gəl \
Definition of legal (Entry 1 of 2)
1: of or relating to law
She has many legal problems.
2a: deriving authority from or founded on law : DE JURE
a legal government
b: having a formal status derived from law often without a basis in actual fact : TITULAR
a corporation is a legal but not a real person
c: established by law
especially : STATUTORY
the legal test of mental capacity
— K. C. Masteller
3: conforming to or permitted by law or established rules
The referee said it was a legal play.
Fishing in this lake is legal.
4: recognized or made effective by a court of law as distinguished from a court of equity
5: of, relating to, or having the characteristics of the profession of law or of one of its members
a bottle … that some legal friend had sent him
— J. G. Cozzens
6: created by the constructions of the law
A legal fiction is something assumed in law to be a fact regardless of the truth of that assumption.