Tonight, while driving I had to stop for a cop in the street at, as I then found out, a DUI checkpoint. After looking at my license and asking if I had anything to drink, the cop quickly let me on my way.
While I want the cops to stop drunk driving to protect innocent people, I have to wonder about the unconstitutionality of these checkpoints. They have no probable cause. They treat all people as guilty until proven innocent. How does this differ from a police state?