LOL ... Reverse psychology .. Kinda similar to the way the the world-wide protests against 2003 war with Iraq actually provoked Bush into going out and doing it his way sooner than he might have ... This principle can be stated as a simple matter of dog training: point out what you don't want -- and he will do it.
As often as one says "I am against war," he is actually sending out to the listener and the cosmic vibes the concept of war. He wants to provide as little attention and energy to what seems to be a problem and as much attention and energy to what seems to offer resolution. One tries not to be 'against' things but rather 'for' an alternative.