Microaggression Academy is a story mission in South Park: The Fractured But Whole.
Plot details follow.
Super Craig will call you and tell you to go inside Crunchy's Micro Brew for help on race.
Once you go inside, you will encounter PC Principal and the fight is actually a conversation. PC Principal wants you to pick up on the microaggressions he uses and to punch him for using those microaggressions. He will then send you out and tell you to point out any microaggressions you may hear during battle.
Now head to your next mission: Medicinal Fried Fiasco.