I'd force them to work in the Trump cabinet.

No death penalty... Ever. Study as to why they did what they did is important. The death penalty is extremely costly for tax payers and no one has the right to take the life of another, with the exception of saving a life in that moment.

That's a weird question. How are we defining murderer? What type of murderer? When is a murderer not a murderer? A lot depends on the color of your skin doesn't it?

Is a soldier, who is also a person, a murderer if he goes to another country and kills people that never did anything wrong to him or us? Is a President that sends troops to kill people that never harmed us a murderer?

Is George Zimmerman a murderer? Obviously not but Trayvon Martin is still dead.
Is the cop that killed Michael brown a murderer? Obviously not, he even got a million dollars given to him.
Is the cop that shot Phil Castille a murderer?

Is the man that came home and found his wife in bed with another man and killed them both a murderer? Can he be rehabilitated? Would he ever do that again? Not likely.

Is a drunk driver that kills a family a murderer?

When is a murderer not a murderer when is an innocent person a murderer?

Frontal lobotomy, then off to work in a uranium or coal mine. Not feeling charitable today.

First off - neutering. Quell the beast within. Then on to other ideas ...

Forced labor of love. Crothet hats for cancer patients, plant trees, paint dilapidated homes for seniors, etc.

I think they should be put on a farm to grow fruits and vegetables to feed homeless and needy families.

Not comfortable with only punishment and no chance for redemption.

Put them in a locked room with no one but the victims's loved ones. Let them decide what happens to them.

Sorry, I'm a bit biblical on this one; you murder, you forfeit your life. I'd do what the Army did to (some) Vietnamese prisoners when interrogating them: up in a helicopter, and kick them out. Sorry if that's barbaric, but murderers get no mercy in my book. If they lived, then they go to a deserted island.

Black Mirror has a great episode about this...

It is hard for me to think of something that would not involve containment of a dangerous person but if you can accept an ankle bracelet... That they would have to be involved in work that would serve humanity say like replanting forests, and they would have to be involved in some kind of activity that required them to examine the motives of their actions in general and in particular.You always ask hard questions

They would have to watch every Elvis movie ever made on a loop 24 hrs a day for the rest of their lives. While eating, sleeping, whatever they do it's there.

Well damn.... @Condor5 had the answer i liked.

I like the way the Germans approach this problem. They're treated like people. They rehabilitate them and prepare them educationally to enter the real world.

Whatever the family decides.... 4 draft horses tethered strategically maybe.... depending. That might be too elegant an ending.... YMMV
Depends how menopausal I'm feeling at the time. If it's anything to do with my kid, dogs, certain loved ones, all bets are off... I wouldn't play, and I don't forgive anything that puts my dearest loves in jeopardy. Yes, I have a dark primitive side....

Being forced to watch and listen to Trump, Republicans, and Trump supporters 24/7.

I do not seek to punish. I seek to change behavior. With science we can now see into the brain. We must study why aberrant behavior occurs & correct it. Those that are a danger to society must be segregated. They must make restitution in some manner to the victims of their crime. With the recidivism rates at the level they are, punishment does not work. It is probably what brought them to prison in the first place. Excessive punishment as a child that changed the brain with stress chemicals or imprinting. As our species gains knowledge in this area we must adapt our attitudes towards restitution & treatment. If we do execute as we do currently, the guillotine is the most efficient, humane & accurate method, perfected by the Nazis. Why not harvest organs to reduce the suffering of those who are awaiting a transplant. This may sound barbaric but only to those who must employ these options. US.

Cause them to relive the victims emotions before death, every day. Make them have real, piss in their pants fear and anguish and dread and sadness and lost hope.

To put them in a room with the body of the person they murdered and force them to sit quietly and read about the life of that person. Learn about his children and work and immerse themselves in the lives of the victim and his family. For a long time. No other contact.

Torture with a methodology similar to their crime’s.

I think our rules concerning cruel and unusual punishment here in the US are too strict.
Violent criminals have it way too easy as far as I'm concerned.

The nature of the crimes they have committed should be taken into consideration when sentencing occurs.
The sentence should fit the crime more equally.

This would also go a long way toward people pleading guilty to get a lesser sentence.

For 1 month..Stuck in a room where nothing but Nickelback and Justin Bieber play non-stop.

I've long held that murderers (if 100% sure through forensics or caught in the act) should die as they killed. If you kill by strangulation, you should be strangled. Stab someone to death? You should also be. Rape and murder someone by gun? Get inmates to do the raping, then put as many bullets in the murderer in the locations they shot their victims. If they don't die from the initial bullets... Let them bleed out.

I have zero sympathy for them and would volunteer to help with the executions if needed.

I would recommend that intensive educational efforts be made to rehabilitate them and treat any mental illness. At the same time, I would like to see them do hard labor for the public good 8 hours/day, Monday through Friday.