Frontman offers support to a group of Minnesotans working to aid the African nation.
The stage is set -- or at least the 150-foot mega-claw above the stage is set.
Performances through the decades.
The wrap-around screen is made up of 888 LED panels connected to an undercarriage of "scissor beams".
The largest ever built for a stadium tour, U2's architecturally striking stage - inspired by the four-legged Theme Building at Los Angeles International Airport - houses lights, speakers and video displays while making the audience part of the show.
Deconstructing 'The claw' at TCF Stadium.
U2's stage apparatus is nearly as tall as the Basilica of St. Mary in Minneapolis, home of another outdoor musical event this month.