I think that's basic social behavior these days but I don't know if its basic human behavior. Maybe I'm just an outlier, but I honestly can't think of a time when I wanted to silence someone because I disagreed with their opinion.
Say whatever you want, no one else should be able to stop that. And yes, unfortunately that opens the door for people to say things that a vast majority of us would disagree with to the point of thinking it dangerous. Unfortunately that's the price for free speech, drawing a line through a sea of gray area is an impossible task.
