I got this off of the care2.com sight:
In 1996, the General Assembly of the United Nations proclaimed March 21 to be the International Day for the Elimination of Racial Discrimination (Resolution: 2142), and called upon world leaders to increase efforts to eliminate all forms of racial intolerance and discrimination. The day was chosen to remember the deaths of nearly seventy people, killed by police during a peaceful demonstration against apartheid, in Sharpeville, South Africa in 1960, and has been used as a rallying cry by anti-racist organizations worldwide.
Three decades after the events in Sharpeville, the UN has organized the World Conference against Racism, Racial Discrimination, Xenophobia and Related Intolerance (WCAR), in order to focus on practical steps to eradicate racism and how to ensure that international standards and instruments are applied in efforts to combat it, and to make further recommendations for future action against bias and intolerance. The UN slogan for the World Conference is "United to Combat Racism: Equality, Dignity, Justice".