I'm going to cut some people out of my life
Why do you want to cut them out of your life?
They solve every situation under the sun with violence.
It's usually rude to cut people off without letting them know or explaining the circumstances to them, but you would be justified in this situation.  If the relationship has turned toxic, and if your safety is in question, you should get away from these people.
I want to but they are my friends.
It is going to be difficult, but it is the right thing to do. It sounds like the relationships are toxic and you need to do what is best for you.