Frans Masereel

According to Wikipedia, the Flemish artist Frans Masereel was a painter and one of the greatest woodcut artist of the twentieth-century. He was a pacifist that rejected the “political” art and party affiliation. Frans Masereel was an activist to the human rights with his works, condemning all enslavements, oppression, war and violence, injustice, and the power of money.
His works Glorious Adventures of Tyl Ulenspiegel , Die Idee (1920), the excellent Die Stadt (1925) and Landschaften und Stimmungen (1929) reflect the power of his engravings and the social critic on implicit on them. The same visual effect impact is proportionated by other works, like the illustrations to Danse Macabre and La Colère. More of his wood illustrations here. (Spy’s Spice)

Updated: watch the Berthold Bartosch’s film adaptation of Die Idee at Videos with Bibi.