German Photographer (20th Century). Medium: black and white photograph. Date: 20th Century. Karl Liebknecht (1871-1919), co-founder of the German Communist Party (KPD) with Rosa Luxemburg; also co-founded the Spartacist League and led the unsuccessful Spartacist uprising in January 1919; killed by army officers; Provenance: Private Collection / Peter Newark Historical Pictures. Photographic rights held by The Bridgeman Art Library.