What should I do about my husband's emotionally abusive ways?

I have been with my husband for 14 years. Our relationship has been good ,but lately he's become emotionally abusive. He keeps telling me it's my fault because I try to talk to him about things that upset me. I knew It's not my fault ,and can't believe he's turning into this person.Last week after our daughter was trowing a temper tantrum in the mall ,and aciadentally kicked him in the foot in an argument he said he would shoot me in the face with a shot gun. This week after my daughter opened up a toy that I bought for my niece he called me a piece of ****. Then last night he threw something at me because I wouldn't let him watch TV because I wanted to go to bed. I'm in school and we just moved to another state where I have no family I am getting all A's in school ,but it's so hard when I have to live with a man like him who's alway's depressed ,and telling me that everything that I feel isn't as important as his problems at work. I have two small children ,and I'm in school Ijust don't knew what to do.