Gruden out We apparently have email going back ten years. Hire an outside law firm / investigators, and search for any and all racist, homophobic, or misogynistic language from administrators, coaches, players, and take action. Right? Whether it's Tom Brady or Cam Newton. This should include anti Asian, Latino, and European racist language.
I believe having an opinion on non-players as coaches / refs (women), and kneeling at games, falls more into strategy and political beliefs.
If this is "who they are", do we want racist players - becoming racist coaches and staff? Along your thinking, better to just purge them for life before they gain "power" as staff, recruiting director, agent, etc.