Liberate Tate

Liberate Tate

Amy Scaife/Liberate Tate via Bloomberg

A protester belonging to the Liberate Tate group lies covered in an oil-like substance at Tate Britain in London in April, 2011. The protest marked the anniversary of the Deepwater Horizon explosion, with those taking part urging the Tate to take no more money from BP Plc.