A politician's goal is always to manipulate public debate. I think there are some politicians with higher goals. But all of them get corrupted by power.
The only way that we can live, is if we grow. The only way that we can grow is if we change. The only way that we can change is if we learn. The only way we can learn is if we are exposed. And the only way that we can become exposed is if we throw ourselves out into the open. Do it. Throw yourself.