I'm not entirely sure what you're getting at. I think any belief system is based on some kind of moral system, but moral systems themselves aren't based on much that's tangible. You can use any justification you want to rob people of rights, and all systems of politics and morality must do this inherently.

The point I'm making is, a lot of people get attached to being "left" or "right", and being entrenched in one or the other (or centrism, honestly) only serves to allow yourself to ignore things you don't want to hear from the others, and turn the others into somehow less-than.

A perfect example of the less-than I'm talking about, you use a lot of language that implies right and center people are somehow morally less than left people. This isn't true, they have a different perspective and different set of priorities that lead them to different outcomes. Same thing if I was talking to a right leaning person about a lefty. The truth, or at least the thing that will benefit the MOST people is somewhere between those two. They're both looking at it, from different directions, so it looks different.