While collusion is likely in my opinion (even though I disagree with Trump being a "tool"), this piece above is a really bad argument. People protest against Trump for his policies, same happened in Brussels, not possible collusion with Russia.
I don't know. When I hear interviews with the people who participate in these demonstrations, I hear a large number of motivations that span from policy to personal. Most objectors to Trump tend to oppose everything he stands for, not just this or that thing.
Among other things, I noticed images of this gigantic crop circle in yesterday's coverage of the anti-Trump protests in the UK that reads "FUCK TRUMP"...in Russian...and was highly visible from the air.