Hi Chilly... You are most certainly not alone; I too have those intrusive/negative thoughts, and have felt at times that I was losing my mind.
It is really amazing, both the mental and physical symptoms that anxiety can cause. I have run the gamut from A-Z of the physical symptoms, and my intrusive thoughts have been close to incapacitating at times. I will never forget the hatred for my girlfriend, that sprung-up from nowhere. Sometimes just seeing a dirty fork in the sink could send me off in a tailspin that I won't be able to take care of myself. I remember an old Star Trek episode from the 1960's, where Captain Kirk went through the transporter and returned as two people, a negative one and a positive one. I guess in reality we all have that inside of us. As Cuchculan mentioned, we are not just merely our thoughts; we are so much more than that. I have heard that if you are hypnotized, you cannot be programmed so to speak, to do something you wouldn't normally do. That being the case, your intrusive thoughts are not going to turn you into a violent person.
What medication are you on, Chilly, and what therapy are you undergoing? I was started on 20 mg of Celexa some 6-7 weeks ago. I will be starting cognitive behavioral therapy at the end of the month.
Hang in there, Chilly! The very best to you!... Chuck