I'm really conflicted on this. On one hand I wish we could improve civic discourse and dialogue and combat tribalism in politics but on the other I recognize that one of the factors that seems to have led to the rise of the alt-right is that the left just vacated a space that appeals to a large group of people - impolite, combative and (sometimes) witty. When I was growing up it was natural for rebellious, cynical young people to be drawn to this kind of politics. That hasn't changed but now it seems to alarmingly be the primary recruiting tool for a particular brand of regressive politics.
I understand these two impulses are probably in direct opposition. I can't want both but I also fear what will happen if we lose a chunk of an entire generation to the far right.