Sure, you're not required, but people will tell you that you're literally Hitler if you don't support their cause of the day. I'm sure eating a chicken sandwich is morally equivalent to gassing some homosexuals.
Looking at the comments here, nobody's calling anybody names for not caring enough. There's discussion and argument, but not even mild insults, let alone Hitler-calling.
I'm sure it happens sometimes somewhere, but it's far from the norm.