They've been wiping their ass with the constitution for 30+ years.. Why would they follow it now all of a sudden?

They take solace in the fact most people don't know their rights and don't have the money to fight them in courts either. Then you have to worry about local corrupt judges who don't follow the constitution as well. The only real court who cites it the most is the supreme court but minor rights trampling never make it to the supreme court and the local authorities know this and play to this fact.