They don't? Link?
Arizona 8217 s Sheriff Joe Arpaio ordered to undergo training to stop racial profiling
The judge ruled in May 2013 that Arpaio, who bills himself as “America’s Toughest Sheriff,” violated the rights of Latino drivers with his crackdown on illegal immigration and ordered him to stop using race as a factor in law enforcement decisions.
Thanks for the link.
Do you have one that supports your claim?