Good Lord. As Temp would say, "lots to unpack here."
People do reserve the right to equal opportunity, that's what the Rooney Rule is for. But owners reserve the right to hire who they think gives their team the best opportunity to win games.
You're living the seventies and watching too much ABC, NBC, CBS, & CNN. NFL owners care more about wins than they do hiring someone who looks like them.
Last I checked, toting a football and catching a pass doesn't qualify you as a head coaching position. Stop citing percentages as a reason to hire someone based on their skin color.
Comparing the NHL is a poor example. Black people, by and large, could care less about hockey. With regard to football, 70% of high school football players are white compared to 20% black. At the college level, 37% are white compared to 50% black. Let's not pretend that being a player at the NFL level somehow qualifies you to be a head coach. Mike Leach and Lou Holtz are good case in points. If you add all three levels together, the number of white people engaged in the sport is much larger than that of black people.
Blackball Colin Kaepernick? That was well deserved. He hates America, so why should an American organization pay him millions of dollars to throw a football. This guy sat and pouted on the bench when the anthem was playing because he was upset that he wasn't starting that game. When asked about, he came up with this story about how he sat for injustice in America. What was he going to say?......."I pouted like a baby because I lost the starting position.?" He cried like a baby and somehow earned himself the poster boy of injustice in America. Sick.