The crap comes from the fundamental differences of ideology of the two groups/poles.
"Liberals" in today's expression are not such, but rather intolerant and extremists for lock-step compliance, hence their efforts to suppress contradictory views and speech. In truth they are regressionists, and authoritarians seeking uniformity of thought and actions.
So-called conservatists are part of the three quarters of the population whom are not conformist enough to get endorsement and support from the Left~Regressive~Statists