The one that applies at the moment is:

"Naturally the common people don't want war; neither in Russia, nor in England, nor in America, nor in Germany. That is understood. But after all, it is the leaders of the country who determine policy, and it is always a simple matter to drag the people along, whether it is a democracy, or a fascist dictatorship, or a parliament, or a communist dictatorship. Voice or no voice, the people can always be brought to the bidding of the leaders. That is easy. All you have to do is to tell them they are being attacked, and denounce the pacifists for lack of patriotism and exposing the country to danger. It works the same in any country."
by Hermann Goering

- or -

"One of the hardest things to teach a child is that the truth is more important than the consequences."
by O.A. Battista

A bit serious I admit...maybe I'll come up with funnies later ;-)