So says the Rush fan,
"Subdivisions" and how it crystallizes the feelings of alienated youth in the suburbs, and here is Geddy's response extolling Mr. Moore (emphasis mine):
One the last tour, Michael Moore came to one of our shows, and we found out that he's a big Rush fan. He was saying that very thing to us about Subdivisions, and he quotes Subdivisions at the top of his last book. And I thought that was fascinating, because I have a lot of respect for him and I love what he does; he's smart, and he's a moral guy.
Daily Kos
Sources doesn't matter and the entertainment world is full of liberals and leftists. It happens, I think the environment might do that to them as well. Neil Young, maybe even Willie Nelson. I know Willie is a pot activist, beyond that, I'm not sure but I can still like his music.