It's a bit sad, but I believe "protests" have lost their meaning. All of what you described were meaningful events, but it these days some one is always protesting something. For instance, there are "women's marches" every year turning out tons of people in a society where equal rights are constitutionally enshrined. That probably doesn't merit such an event.

My concern is that if, Heaven forbid, there is ever again something worth protesting to that degree, no one will pay attention. Regular Americans, rather than being swayed, will look on and say, "Oh look honey, the kids are protesting again."