Dallas has lots of goons on sportbikes. Different groups in different parts of town. The constables and county deputies are the only ones that ever give chase. Granted, it's unsafe to chase them in most instances, but you can't throw a lawman tantrum when you pull one over either. That young man could have benefitted highly from a few conversations with older folks, and maybe even a buddy from the gun range (thanks Charles) who happens to be a judge telling HIM how to act when facing false accusation and unlawful confiscation of his property. Cussing at the police garners very little sympathy in court. Calmly expressing your concerns is palatable, but keeping your trap shut and complying will get you farther (in the aftermath) than acting like a little bitch and escalating the situation. Don't act like a perp, and don't look like a perp, and your bullshit factor goes WAAAAAAAY down. Just sayin.
As Burns stated above, It's a good idea to run down Thin Blue Line. A real eye opener.
Also, his plate was NOT properly displayed for the mandatory reading distance. It's virtually impossible to read one at the "by the book" distance that is not perpendicular to the road.
Another little interesting bit on Dallas County's Law enforcement:
http://www.myfoxdfw.com/story/19894753/dallas-county-must-repay-misused-state-funds