I ran across this old quote from Philip Yancy in What's So Amazing About Grace.
One China expert estimates that the revival in China represents the greatest numerical revival in the history of the church. In an odd way, the government hostility ultimately worked to the church’s advantage. Shut out of the power structures, Chinese Christians devoted themselves to worship and evangelism, the original mission of the church, and did not much concern themselves with politics. They concentrated on changing lives, not changing laws.
Now, I'm not saying we shouldn't be involved in governmental affairs. But our primary mission is larger and more transcendent. We will stay focused on why we exist. When we lose sight of our purpose, we resort to second rate methods of operating, which result in judgmentalism and control.