The one-two punch of Covid-19 and the racial-justice movement has upended huge swathes of society -- work, school and health care. Below the radar, it's also shaking the foundations of another set of U.S. institutions -- museums -- forcing them to sell prized works and broaden the definition of great art.

NEW YORK - After a long career shocking audiences, even Alice Cooper has surprises. The glam rocker has discovered an Andy Warhol work that had been rolled up in storage for decades.