46% and 48% of voters, not of the population. Neither voting block are a majority of the population.
I would argue this particular part of our current political climate is largely pushed by a minority, and is as much about them believing their own propaganda as it is about the fact that they lost the election. Keep in mind there was quite a bit of violence coming from the left long before the election was over (attacking people at Trump rallies, fire bombing a GOP headquarters). They genuinely believe the sky is falling, so to speak. It's unfortunate, because it makes it difficult for the rest of us to have a discussion about where we've actually gone wrong.