Only when there’s enough people that it’s bordering revolution. Note how many national guard were not only deployed, but actually found themselves in gun battles (over civil rights), it was nuts by today’s norms.

History shows that protests worked either when the vast majority of the population striked, or when they were violent.

I am quite disillusioned that gathering in a single square for a few hours with some signs will ever change anything.

There were plenty of less peaceful groups too. So I guess they 100% worked too.

Note, 100% can work, but don’t work 100%.