You are correct. It is illegal to pull someone over for no reason. The law tells all of us, no matter what state you are in, you need probable cause. So, before you all get bent out of shape, agree or not agree, 1 mph over the limit is probable cause, a "roll" stop is pc, tinted windows is pc, accellerating too fast from a stopped position ( in their opinion), is pc...and I could go on and on....just be nice, it's just a job...we get bored too...