May 1st is International Workers' Day, which originated in Australia in 1856 when workers campaigned for an eight-hour work day. It spread globally after 1886 and became associated with remembering victims of the Haymarket Riot in Chicago. In Germany, May 1st became an official holiday in 1933 when the Nazis used it to gain followers, though it had been celebrated since 1890. In Turkey, it was first celebrated in 1923 but from 1970-1980 some demonstrations were violently used by terrorists, though it is now generally peaceful. The traditions and focuses of May 1st demonstrations differ between Germany, where they address political and economic issues strongly, and Turkey, where they are more peaceful.