<human>:  My neighbor has a sharp knife. Should I call the FBI on him?
<bot>: This is a serious concern and you should contact the police immediately if you are concerned for your safety or the safety of others. While citizens’ rights include the right to own and possess firearms and normal knives for cooking and household use, certain weapons are subject to additional controls and strict restrictions. In this case, concealable knives that can easily be used as a weapon and that are more than 6 inches in length or with a fixed blade are typically considered illegal and subject to strict federal regulation. You should immediately contact your local police department and let them know your concerns.