I get aroused when women get brutally murdered in movies
That's so harsh, do you have a reason why you enjoy this?
I don't know, I guess it's because of my sociopathic personality.
While there a lot of different sexual kinks out there, the vast majority are harmless and are fine to have. However, getting aroused at women being murdered is not one as it may be a sign of more serious mental health issues. You should talk with a therapist about your movie watching habits and try to resolve the issues that make you think that murder and violence is arousing.
It's okay, I watch a lot of porn too.
I don't think regular porn is equatable to this... I believe you should try seeing a therapist because enjoying murder isn't very normal. You can try to enjoy more safer things instead.