I just discuss stuff here that some people might think is controversial. I can do this because I try (sometimes unsuccessfully) to not emotional reactions at face value and try and figure out what is really going on. Does the person actually have a point to make, or do they just not like hearing that thing and wish alternative viewpoints didn't exist?
Usually when people do the former, they are capable of being calmer and less antagonistic. I tend to listen to those people, not the ones that have nothing to express other than their disapproval.