Batman: A Maroon in Midnight Blue

Bruce Wayne wants to do what all is necessary for the collective good of the people of Gotham, but he struggles to understand what role to play in matters of racial politics. Suddenly, Gotham's airwaves are highjacked by a brand new super-criminal dressed like a blackface Jim Crow character. Who is Minstrel? How is he connected to Joker? What is his end-goal? [Note: Black author]