Just so you know...If this sign is on your window, you will be searched. They don't really care if you "like" it or not. Rules are rules. Answer the simple questions and provide ID.
Also, Sheriffs are not "Cops", cop stands for "Constable on Patrol", FYI.....Just so you understand why Sheriffs, DPS and Highway patrol will laugh at this and then drag you out for a roadside search.