In my situation there was no anger, or any other emotion involved. I didn't attack anyone violently, nor did I feel any hostility towards him.
I'd met him online through a BDSM site and we'd agreed to meet in person. He was a masochist who wanted to be strangled briefly because it turned him on. Once I started strangling him, I couldn't have stopped if I'd wanted to. I didn't want to stop.
I felt like an animal that had control of it's prey. All I could think was KILL! There was no other rational thought in my head.
When he realized I wasn't going to stop, he panicked and eventually forced me off him. If I had tied him up beforehand, he'd be dead by now. I didn't tie him up though because I wasn't planning on trying to kill him when we met. I just couldn't resist the compulsive urge to do so.