Cancelling events and boycotting sponsors because their speaker line up isn't sufficiently in line with imaginary industry demographics. Or even because a blind selection process, the thing people say they want, ends up selecting a wrongthinker.
Bullying comet-chasing scientists into tearful apologies over their choice of shirt. Or a self deprecating joke. That's just in STEM, you see the same in comedy, in politics, etc.
In each instance, a pitchfork wielding mob was summoned with social media outrage by bad faith actors. And get this, they are the ones who also loudly complain about trolls.
The rule to make sense of it is quite easy: when they do it to you, it's just consequences for speech. When it happens to them, it's targeted harassment that makes people feel unsafe and someone needs to step in and ban it.