An artist who calls herself Hazard (C) paints during a graffiti art event in support of Breast Cancer Care, part of Women's Day celebrations in London March 8, 2014. On March 8 activists around the globe celebrate International Women's Day, which dates back to the beginning of the 20th Century and has been observed by the United Nations since 1975. The UN writes that it is an occasion to commemorate achievements in women's rights and to call for further change. REUTERS/Kevin Coombs
Polish-American artist Michelle Tylicki poses against a pink background during a graffiti art event in support of Breast Cancer Care, part of Women's Day celebrations in London March 8, 2014. On March 8 activists around the globe celebrate International Women's Day, which dates back to the beginning of the 20th Century and has been observed by the United Nations since 1975. The UN writes that it is an occasion to commemorate achievements in women's rights and to call for further change. REUTERS/Kevin Coombs