For this conflict it seems to me it is more important to watch for what criticisms are unspoken more than what criticisms are stated. I am only willing to spare my attention to those who are willing to criticize their own side. Otherwise I cannot distinguish the intentions for genuine dialogue from manipulative propaganda.
I view the fact that you were holding up a poster of hostages, and not the Israeli flag, as a sincere sign of peace. Thank you for your contribution.