Anti-hate

These striking dummies were installed in the Place Saint Lambert over the weekend as part of an anti-hate event. Actually, I could not understand exactly what the event was about. The banner reads 'It is said that war annihilates the weak but peace does the same thing. By responding to hate we only propagate it', paraphrasing a quote by Bertolt Brecht. If any one can work this out please let me know.