What Should I DO?!?!😖

My (ex)boyfriend & I have been together for 4 years and though we always go through rough patches, as anyone else, I think this way the final straw. We were supposed to moving this week & I had stayed at my grandparents for a night. When I had come home the next day to pack, my apt was trashed and I found drugs & a gun. Actually, my mom & dad & he has me in legal issues w/ my landlord. Should I leave him? Or