Supreme Court Justice Clarence Thomas wants to overrule any ability of federal courts to hear accusations of rigging legislative maps based on race, wrote court watcher Mark Joseph Stern for Slate on Thursday — and in the process, he took aim at the landmark ruling that prohibited segregation in public schools. This came out of the court’s ruling this week in Alexander v. South Carolina NAACP, in which Justice Samuel Alito, currently under fire for a series of scandals about the display of extremist symbols on his property, wrote for the six right-wing justices to greatly restrict the circumst…