Why do they do it?

"And here's what puzzles me. Why do they continue to do this? Is is because they're too thick to realize what the public think of them? Or is that they know but have become so corrupted by power that they just don't care? Or is that that they do know and do care, but just have no idea how to behave differently?"

For what this is all about, take a trip over to Stumbling and Mumbling - an excellent post.