This really isn't an anti-war slogan either, but the poster that you posted reminded me of one that I think is quite fitting with the same sentiment. I couldn't find a copy of it anywhere but I'll try to describe it. A cartoon figure of a beagle carrying two suitcases along with a tennis racquet under one arm- and in big bold letters: I REALLY CAN'T LIVE IN A WORLD WITHOUT LOVE. PAX
I would just like to say, thank you all for standing united through the beatings and gas. Your sacrifice has at least made it safer for people to protest, thus a more diverse turnout. The worst that ever happened to me was getting pushed down the street by chicago riot police but chicago has a bad rep in the hip community.