First, be civil and polite. Do not fight or argue with the police. However, I am not saying give up your constitutional rights to remain silent and to not be searched without probable cause and/or a warrant. You have an absolute right to not answer any of their questions. I strongly suggest that you “remain silent” even if you think you are “clearing something up,” whatever you say can and will be used against you later on in court. Assert your right to remain silent, one of your Miranda rights, and request to speak to your lawyer. Furthermore, do not sign any statements without clearing it with your lawyer first. Do not consent to a search of your car, your house, your backpack, your phone or any other property that is in your possession or that you own. Politely request that they obtain a search warrant before searching anything. If they go ahead and search without your consent and without a warrant whatever they find is now subject to being thrown out as “fruit of the poisonous tree”.