Because right wingers don't have empathy. They don't care about children.
He lies so much I don't trust a single fucking thing that comes out of his ugly mouth or any of the other Nazis around him.
It's the age we live in, unfortunately. We have so many things distracting us - internet, streaming sites, social media, work, irl social lives. People simply do not care unless it's happening to them. In my opinion, even though we see outrage on the left, it's not enough outrage. It's not surprising that his approval rating hasn't change. But let it happen to one of their own. Then they'll see...
Its tribal. Like it has been said, he could shoot someone on 5th avenue and the zombies would still vote for him.