The #1 difference I notice between people I talk to who identify as the "left" or the "right" is whether America is an inclusive or exclusive "club". Also, main takeaway from this? Don't attack people. It seems like that's a big complaint from the[se] people: I've been attacked for my beliefs and values.
Yes and no. If someone is willing to discuss their viewpoint and consider the opposing viewpoint in good faith, then I agree they shouldn't be attacked. If someone is willing to share their worldview without vitriol or hatefulness, they shouldn't have their character assaulted.
On the other hand, something I see a lot is people who are outraged that other people criticize them sharply for their bigotry. "Don't call me a hateful bigot because I believe I should be able to discriminate against gay people." "I'm not a bad person because I think Muslims should be banned from entering the United States."
What I've seen is that some people are not used to being criticized or challenged for their regressive views and they react poorly to it. They lived most of their lives experiencing zero push back for saying racist or homophobic things and very quickly things have changed. Trump in some ways has allowed those people to go back to believing nothing they're saying or doing is wrong, and that mean 'ol liberals are the problem. There certainly is a component of the far left that is out there shouting people down for having opposing views. But the truth is that tolerance is advancing rapidly and it is disorienting for people who've never had to practice it much.