As Emperor, I would establish games on a small, remote island in the Aleutians.
On one side of the island, I would drop off KKK types, Aryan Nations members, political skinheads, and neo-Nazis.
On the other side of the island, I would drop off an equal number of Black Panthers and other black gang members, Farrakhan followers, Colin Kapernick, and everyone who voted for Maxine Waters or Sheila Jackson Lee.
I'd scatter medieval weapons around the place, and provide limited facilities for food and shelter . . . put armored cameras everywhere . . . and let both groups settle their differences on 4K tv.
Probably would charge a modest pay per view fee.