As someone now living in Europe, I find the US protests mild and small. When Europeans protest, they protest. I mean, my native Greece saw a massive protest in Feb, well over a million went out, in a country of ~9 million. This is how you do it: https://www.youtube.com/watch?v=tm3vEKMnA-8
You're basically watching a whole country (re)learn how to do this. Most of us have had it good for a long time, up until very recently. You're seeing a lot of first-timers in every one of these protests, as the movement grows. Give it time.
The problem, the Americans work too much. If they had the vacation days like the Europeans, these protests would turn French. The demonstrations in Germany are weak compared to the French too.