You can never know what is and what is not powerful, but you can always find out what the powerful people are scared of. A state like China looks so powerful, but they are so scared of the Internet, so the Internet is more powerful than them.
Politics is like air and water. And you know if there is bad politics. Everyone is polluted. Everyone is unhealthy. See the people walking on the street: how they act.
Any individual can contribute its own belief. And our society or even our government are made by the people. The people would have the final voice, but it requires each individual to act. If we don't act, then the result is very clear. So for too long Americans take liberty as granted. We think we are in the safe hand, the democracy and the liberty, which is not true. And it can be even getting much worse than today.
Chinese citizens have never had the right to really express their opinions; in the constitution it says you can, but in the real world it is more dangerous. In the west people think it's a right they're born with. Here it's a right given by the government, and one that's not really practised.
For artists and intellectuals today, what is most needed is to be clear about social responsibility, because that is what most people automatically give up. Just to protect yourself as an individual is very political. You don't have to march on Tiananmen, but you do have to be clear-minded, to find your own means of expression.