There is the LGBT. Specially the T part. The right thing is to do is support their rights, and it is very hard not to do the right thing when you know what the right thing is. However, the republicans have weaponized it against the democrats. They call them radical left and they campaign saying things like the want to convert your sons in girls and other awful things. It is an imposible choice because it can cost you the election.

Except both sides disagree on the "right thing."

It's same for both sides. Pro-life stance cost them a lot of votes and could easily cost them election.

I think it is because people who think or say "what about me?" hear "what about me?" from others as if it's support of their own view, when really their core issues could be totally different. "Yeah, what about us?"

As opposed to "we need to help everyone, especially highly victimized groups". And then people infight over which groups require more attention vs everyone else.