I have seen people talk shit about Michael Moore many times but some of his documentaries are cultural touch points. Sicko was one of them. I'm willing to bet that millions of people who watched it had no idea how bad things were prior to seeing it.

And before someone says something about how "but it didn't make anyone angry enough to change the system!"

Yeah well nothing else did either. Popular awareness is always the first step. And even if it takes decades for things to start changing, it's still a step worth taking