Before constitutional carry became law, would you have been okay with the police pulling you over at random, without probable cause, just to search you and your car to make sure you weren't illegally in possession of a firearm? Random drug testing is the same principle. Commit a crime while under the influence? Get punished accordingly. Stopping random cars to see if they "might" be doing something illegal? Not okay. Investigating people without probable cause on the off chance that they may have used illegal drugs (not necessarily under the influence mind you) in the past several days is not okay with me.Random drug testing, IMO, does not infringe on one's freedom but rather help maximize an others.