I think it was a good point that a lot of “protests” are really more like “rallies”.
If a couple thousand Trump supporters get together to wave flags and talk about how the Mexicans and the Negros are ruining America, that’s not a protest, is it? Or is it?
When do you call it a protest, and when do you call it a demonstration, and when do you call it a march, and when do you call it a rally?
Lots of protests really just fill the social purpose of a rally. You go out in the streets, meet up with like minded people, and cheer for the same stuff and boo the same stuff. The exact name the organizers give to a gathering of like-minded people depends on how they want to brand the gathering, both to outsiders and to themselves.
Or take the social function of the well-known “protests” by the Westboro Baptist Church. Why did those bozos protest funerals, first for gays and then for soldiers? I mean, they taught that the entire world was hellbound except themselves, so what was the point? The point was to unify the membership. The “church” was really just Fred Phelps and his extended family, that he ruled over with an iron fist. And organizing those protests was a way to demonstrate to all the children and grandchildren in the church that everyone in the world hated, hated, hated them, and their only friends were inside the family/church. That’s why they switched from protesting gay funerals to protesting soldier’s funerals. Gay funerals weren’t divisive enough, you wouldn’t want the kids in the cult to be supported by other right-wing fundamentalist bigots. The point was to cut them off from everyone.
So these marches and protests and rallies serve an internal social function that’s probably much more important than trying to influence people outside the group.
When people contribute personally to something, they tend to strengthen their belief in it. Charismatic people take advantage of this all the time. If they want someone to like them they don’t do favors for that person, they ask the person to do a favor for them. And then the person becomes their supporter, because why else would they do that favor if they didn’t support the person? Asking for a personal tangible commitment–like attending a rally or a march–is a way to convert marginal supporters into committed supporters. It’s why food banks ask people to come in and scoop rice into plastic bags. The volunteer work is basically worthless, but people who volunteer turn into financial supporters, and the financial support is what they really want.