In the wake of the Sabra and Shatila massacre , Peace Now led a march from Zion Square and moved towards the Prime Ministers ' Office in Jerusalem on 10 February 1983 . During the march Peace Now demonstrators encountered a group of right-wing activists . In the ensuing confrontation , Yona Avrushmi tossed a hand-grenade into the crowd , killing Emil Grunzweig , a prominent Peace Now activist , and injuring several others
Sabra and Shatila massacre
Sabra and Shatila massacre
Peace Now