“Laughter is a Devastating Weapon (Tate Publishing, October 2015) is an exciting new publication devoted to the work of German artist John Heartfield (1891-1968), known for his incomparably dark, mocking, politically pointed photocollages. The title aptly refers to the satirical power of Heartfield’s artistic efforts, which earned him one of the top positions on the Nazis’ “the most wanted list” when they came to power in 1933 and nearly cost him his life.”