If you believe that you are being harassed, you should report it to the police and ask that criminal charges be instituted. If the harassment is extreme, and you believe that you are in danger of imminent harm, call 911 immediately. If you have been harassed, you can either go to the police station and make a report in person, or you can call the non-emergency number for your local police department to report the harassment. Every state defines harassment differently, so you will need to determine if the behavior constitutes harassment in your state. You can look up the definition on the American Bar Association website. (See the first link in the References section at the end of this article).