Why do I keep having all of these scary dreams?!

Like just about on a weekly basis, I end up having some kind of dream where I'm hand cuffed and taken against my will by law enforcement where I'm accused of crimes I didn't commit. There is no due process. I'm automatically put in jail for drug possession, forgery, and attempted murder--crimes I DID NOT commit at all. Nobody believes that I'm innocent. I have no Miranda rights, no right to have an attorney or trial. Also, in the dreams, I have way more tattoos than I have now. I'm also locked up in this prison cell with a feces infested toilet and theres a group of these heavy set people that have weapons and are ready to kill me. I would hear one of them yell, "You are wrong! Quit it!" Right before the beating takes place, I wake up from the dream.
There are also these dreams where I go to my car late at night from a grocery store and a really big buff guy with a gun is after me. I get to my car, lock my doors, and start it, and he comes up to the window with the gun. After that, I wake up again.

What gives with me having these type of dreams?