That truth is this. The closest thing to actual power most of us will ever hold is a vote and a voice. That's it. That's the whole arsenal. It isn't much, until enough people pick it up at the same time.
But neither of those things work if we stop using them. And they stop working in a different way when we use them without thinking. When we vote the way we're told to vote, believe what we're told to believe, and accept what we're told to accept.