Racism The encyclopedia Nationmaster.com has a superb article on racism. At first sight it is a bit dry to read, but the links are fabulous.
EUMC Strictly for the enthusiast. The European Monitoring Centre for Racism and Xenophobia.
Racism revision A basic outline on the topic of racism for those studying GCSE from re-xs.
Slavery
Resource on slavery An interesting site. Some of the material on British involvement and some of the links are very good.
Slavery 1700-1930 A comprehensive and thorough guide to slavery. Links to articles about the major personalities. (Spartacus Internet Encyclopedia)
Anti Semitism
anti-Semitism
This charts ant-semitism from 3rd Century BCE to the present day. Useful for reference.
Apartheid South Africa
Apartheid Good on Apartheid. Superb links to every major character imaginable. Not always presented in readable form, but a tremendous resource.
Nelson Mandela A link to the BBC news story of 1964 when Nelson Mandela was "jailed for life for sabotage."
Nelson Mandela A more recent BBC story on the South African statesman. Despite many years in jail, Mandela emerged to become South Africa's first black president.
Mandela Biography This is a useful biographical passage - with photographs.
Steve Biko A noted anti-apartheid activist in South Africa in the 1960s. He died in his prison cell in 1977.
Steve Biko Another source of information on this founder and martyr of the Black Consciousness movement in South Africa.
Trevor Huddleston A member of the Community of the Resurrection at Mirfield, who did much to alert the world to the horrors of Apartheid. Expelled from South Africa because of his views by the South African Government of his day.
Segregation in America
Martin Luther King Jnr This is the Washington DC Martin Luther King Jnr National Memorial site.
Martin Luther King Jnr This is a very large, very comprehensive site on Martin Luther King Jnr. Speeches, quotations, comments, links etc.
Martin Luther King Jnr This is the BBC site on historic figures. The article is only one page in length, but is a good introduction to the man.