[Chris2048]

If I pointed a gun at your head, I'm being non-violent, no? Of course, you might reasonably shoot me if I tried.

Threatening anything, by compromising the security of something, is not neutral; occupying buildings is not either. Neither is wearing a mask and showing up in large, angry groups: even if you do no harm, you are still threatening. Even if the majority commit no crime, they might provide cover for those who do.

To me, the whole appeal of protest in this form is less about an accurate expression of feeling, opening up and appealing to the out-group, than it is about threatening harm, often is a sloppy, undifferentiated manner (e.g. public stores/car are at risk, messages are mixed).