The fact that the United States is a democracy is proven by the fact that Barack Obama took over from George W. Bush.

I'm starting to think that the United States is not a democracy and I'm worried that one political party is going to stay in office forever and become tyrannical. But I was talking to one of my friends about my fear and he said that my fears were unfounded because if the United States was a dictatorship, then the next president after George W. Bush would have been another Republican. I thought about this and realized that my friend was right; Barack Obama took over from George W. Bush, so the United States must be a democracy after all.