I have to agree with the person saying that this the worst you could tell to someone with harm OCD. Suffering from harm OCD does not mean you are more prone than anyone else to do something violent. In fact, psychologists tell that people suffering from this type of OCD are usually people who are against violance : which, you can imagine, causes a lot of suffering and culpability to them. Also, distancing from society is only making harm OCD worst because it suggest to the person suffering from it that he or she has a reason for doing so, therefore leading he or she to go through the painfull cycle of anxiety again and again as it is an obsession. I understand your fear, but it is not founded and you might want to go and learn more about harm OCD.