Says under color of law. That would definitely include police and sheriffs. I don't think companies can make their own laws (ideally that would be the case). Companies would run afoul of employment laws if they try to fuck with their people.

As an aside, I think families that have lost loved ones to police acting like brown shirts should sue for deprivation of rights under color of law. To hell with the police brutality shit, make them live in fear like they do to us. This is the best and strongest tool available to us to attempt to slow their bullshit down.