Complex sentence: Both Jews and Arabs have been killed and critically injured by Palestinian stone-throwing during the Israeli-Arab conflict; this list includes Arabs killed or critically injured while riding in vehicles supposed by rock-throwers to be carrying Jews.
Split into simpler sentences: Both Jews and Arabs have been killed or critically injured by Palestinian stone-throwing during the Israeli-Arab conflict. This list includes Arabs killed or critically injured while riding in vehicles supposed by rock-throwers to be carrying Jews.