Why didn't you call the police? What is the point of all the pictures if you do nothing with them?
I don't think it is about safety. If you truly thought this man was a menace you WOULD have called the police. I have said it before that your actions and feelings are reminiscent of a delusions of persecution disorder. Your hoarding of pictures merely validates your feelings of persecution and self-importance.
I am not saying this to be hurtful any more than telling someone with high blood sugar should see a doctor for diabetes. I think seeing a doctor and talking about your feelings and perhaps receiving medication would make your life a bit less stressful and more enjoyable.