This is a false premise.
There is no outrage over “cracker”.
There are rules in the league about conduct unbecoming. Using any slur, threatening violence, drugs, assault, etc, etc - they’re in the rules.
the rules don’t say “if a white person calls a POC X, Y or Z, this will happen” or “if a POC calls a white person X, Y or Z, that will happen”
Antonio Brown spent the better part of the last month acting like a maniac, escalating to the last week of insanity, where he both threatened and used a slur against a GM.
and it doesn’t matter in the slightest wht color anyone was or what the specific slur was.
it merits a suspension because it’s the very definition of “conduct unbecoming”.
I would think this obvious enough as to make explanation unnecessary, yet here we are.