Someone I dislike vehemently is always gung-ho about the white poppies, so I've heard of them, but probably never gave them a fair chance. But, having said that, I think having a special poppy which proclaims 'I am against war!' only creates a stupid false dichotomy, because I'm fairly certain that people who wear red poppies are not all out there cheering Tony Blair for getting us into Iraq, but if white = peace then you're not allowing red = peace.

If you're a pacifist, then you could wear a peace badge next to your poppy.