Several decades into the future relative to Prime Earth, Earth 50 is home to the despotic Justice Lords, conquerors of their Earth after President Lex Luthor murdered the Flash, pushing this Superman over the edge into the role of tyrant after murdering Luthor in retaliation. The Earth's heroes followed his lead, becoming self-interested fascist dictators curbing free speech, democracy and rebellion for the sake of "safety." Only the Batman labors in secret to overthrow his comrades and restore freedom to the Earth.
Justice Lords:
Superman
Batman
Wonder Woman
Green Lantern
Martian Manhunter
Hawkgirl