Nobody's going to spell it out. If you announce someone doesn't support <popular movement> as much as you'd expect them to on a public forum, that will likely cause backlash. In that case either you did it in purpose, or caused it by not thinking of consequences of your actions.

That seems to imply that all public disagreement about a popular or controversial movement is "public shaming" and thus that you would oppose all such discussion.

The difference here is the discussion/post itself is almost irrelevant. Anyone can do it. You just can't do it to a coworker without work-policy based consequences.

If you want to do public shaming and cause backlash, nobody can stop you.

You must be new to twitter. The whole thing is a solicitation for others to attack.

That’s simply not true. It is a mistake to project your coarse impression of Twitter onto every individual tweet.

Just like it is a mistake to project every instance of subtle, overt, or systemic racism on all white people but here we are, talking about privilege differences between classes in the first world while the third is pointing and laughing at our stupidity.