One of the images that has haunted me for years was a big protest over an important event that warranted a serious discussion and protest. But in the middle of it, someone broke into a nearby restaurant and made off with an entire cheesecake. Broad daylight, right in front of news cameras, their pale-ass face giving no fucks in the world.
Fucking opportunists. They used to come every year and trash parts of the city during protests. Whenever they'd get arrested, they'd always be from neighboring states, never locals. It generates a massive amount of ill-will and casts legitimate protests in a bad light.
Regardless of outcome, though, the most important thing we can all do is vote. Get everyone you can to actually turn out for local elections, state/province/territory elections, and national elections. Protesting is another tool between voting.