Whenever I've asked this same question, there are always a few who say "stop being complacent, get out and become an anarchist" but that is completely unfeasible for most individuals. Becoming a radical requires a complete and fundamental lifestyle change. That's not something that the general population can get on board with.
I'm yet to find a good way to incite change without having to dedicate your life to a cause. Like the OP, I'm open to suggestions.
