Saints players and other key sports and public figures are angry at Drew Brees for his anthem comments

He can't credibly do it alone, but he could do it with teammates at his side and speaking with him. This would be AFTER Brees approaches them, hat in hand, admitting that he doesn't understand and sincerely asking to learn.

Malcolm Jenkins, for instance, is in the building (figuratively). There are thoughtful guys like Demario Davis and Cam Jordan down the hall. I'm sure Ben Watson and Curtis Johnson would take phone calls from Brees.

I doubt that Brees' African-American teammates (past & present) hate him now. I would expect more that they are disappointed in him.
it's what a leader would do