My favourite one (it happens a lot in the UK and I assume in other places too) is when people say things like "I support the cause but the protest is really disruptive."
Like no shit, that's the entire point of a protest. They also sometimes complain about strikes being inconvenient for them. Oh, is this strike illustrating to you why this service is essential and it would be bad if it went away?
One time when I used to be on reddit I had an argument with someone who was against a climate protest because it could have blocked an ambulance and gotten someone killed. But this was after the protest had already happened and that had not occurred. So you don't support it because of a hypothetical disaster that you just made up, that already didn't happen? People, man