Hezbollah found itself under new attack this week, and not from Israel.

Seven supporters of Hezbollah and its Shiite political partner, Amal, were killed on Thursday when gunfire broke out at a Beirut protest. Hezbollah and Amal were protesting for the removal of Judge Tarek Bitar, who is investigating last August’s disastrous Beirut port explosion. That incident killed 218 people and is seen by many Lebanese as a metaphor for the nation’s endemic corruption and seething popular anger. Hezbollah fears its allies will fall to justice if Bitar is allowed to continue his work.