I've heard many cops say that if they can't find a violation on someone that they're not trying, luckily they usually only try when they've already profiled someone as looking like a criminal. Our local LEOs give almost no fucks about traffic infractions. On the rare occasion that I see them on a traffic stop it's never a 'normal' stop...occupants out, car search, handcuffs, etc. The occupants are always a darker shade of brown than I, except for the occasional crackhead looking white ones.