From one of the articles that was posted in this thread, it says that members of Islamic Jihad and Fatah militiamen were responsible for sending rockets into Israel. And it also said that Hamas was cracking down on those groups. I'm guessing they were also the ones who sent rockets into Israel during the time when Hamas was engaging in the unilateral cease fire. I'm having some difficulty seeing why people would criticize Hamas for cracking down on these groups if they're responsible for sending rockets into Israel.