State governments have the power to levy fines, and last time I checked cops work for state governments.
Regardless, why are you zeroing in on the most minuscule part of that entire post?
What law was broken? Ohhh I don't know maybe a speeding law? You don't believe in those do you? FREEDOM FOR ALL LET US DRIVE 100 MPH!!! There wouldn't have been a notice to appear or a traffic stop if he wasn't breaking a law. And the cop clearly says why he pulled the guy over in the video.
Btw, I would pwn your ass on the subject of the Constitution. You don't believe in the Constitution, you believe in anarchy.