In my humble opinion, Napier's intentions may have been noble, but there is no doubt that this move backfired on both he and the university itself.
Football coaches should coach football, period. They aren't responsible for teaching life lessons. They should stick to teaching proper tackling techniques, route patterns, throwing mechanics, etc. Politics in any form has no place in any sport.
The only "right" things football players should worry about doing are putting 100% effort into how they play and practice, obeying the law, and following the university's rules.