Jack London's writing was censored in several European dictatorships in the 1920s and 1930s. In 1929, Italy banned all cheap editions of his Call of the Wild, and that same year Yugoslavia banned all his works as being "too radical". The Nazis also burned some of his socialist-friendly books like The Iron Heel along with the works of many other authors.
(You have to wonder what dictators had against dogs?)
Banned in Italy (1929), Yugoslavia (1929), and burned in Nazi bonfires (1933).The Call of the Wild, Jack London Banned in Italy (1929), Yugoslavia (1929), and burned in Nazi bonfires (1933). Source: 2004 Banned Books Resource Guide by Robert P. Doyle.