Rubbish. When someone comes into this country and refuses to obey the directions of a law enforcement officer, their supposed right to politeness (not in the Constitution) is superceded by 300m Americans' right to safety. And obeying the laws of the country which you are requesting to enter is no more trading liberty than stopping at stop signs is, so the Ben Franklin quote doesn't really apply. We're not talking temporary security.
This isn't some cop getting a hard-on by bossing around people while off duty. If you don't turn your car off, you threaten his safety as well as the safety of everyone else around. This jerk's ego does not guarantee him the the right to politeness. Would it be nice if border patrol agents always said "please"? Sure. But if they're tired or in a bad mood, that doesn't give you the right to break the law. His job is not to be a goodwill ambassador and hand out chocolates to all who come, but first and foremost to protect the citizens of the US and others who legally enter our country without such buffoonery.
This isn't some cop getting a hard-on by bossing around people while off duty. If you don't turn your car off, you threaten his safety as well as the safety of everyone else around. This jerk's ego does not guarantee him the the right to politeness. Would it be nice if border patrol agents always said "please"? Sure. But if they're tired or in a bad mood, that doesn't give you the right to break the law. His job is not to be a goodwill ambassador and hand out chocolates to all who come, but first and foremost to protect the citizens of the US and others who legally enter our country without such buffoonery.