What kinds of ways does racial segregation still exist today?

Malaysia has an article in its constitution which distinctly segregates the Malays and other indigeneous peoples of Malaysia, or bumiputra, from the non-Malays under the social contract, giving the indigeneous population special rights and privileges. Cant do anything..,Im a half Chinese. Im gonna fight for non-malays and ill sue Malaysia for being unfair :P Im a malaysian. :'(

Slavery in Mauritania was finally criminalized in August 2007. It was already abolished in 1980 though it was still affecting the descendants of black Africans abducted into slavery before generations, who live now in Mauritania as "black Moors" or haratin and who partially still serve the "white Moors", or bidhan (the name means literally white-skinned people), as slaves. The number of slaves in the country was not known exactly, but is was estimated to be up to 600,000 men, women and children, or 20% of the population.

For centuries, the so-called Haratin lower class, mostly poor black Africans living in rural areas, have been considered natural slaves by white Moors of Arab/Berber ancestry. Many descendants of the Arab and Berber tribes today still adhere to the supremacist ideology of their ancestors. This ideology has led to oppression, discrimination and even enslavement of other groups in the region of Sudan and Western Sahara. In certain villages in Mauritania there are mosques for lighter-skinned nobles and mosques for black slaves, who are still buried in separate cemeteries.

Since the 16th century Plantation of Ulster, Loyalist Protestants and Irish Catholics have lived in a highly segregated state in northern Ireland, with large divisions existing today regarding education, housing, intermarriage and employment.

"Not all racial segregation laws have been repealed in the United States, although Supreme Court rulings have rendered them unenforceable and illegal to carry out. For instance, the Alabama Constitution still mandates that Separate schools shall be provided for white and colored children, and no child of either race shall be permitted to attend a school of the other race. A proposal to repeal this provision was narrowly defeated in 2004. Redlining is the practice of denying or increasing the cost of services, such as banking, insurance, access to jobs, access to health care, or even supermarkets to residents in certain, often racially determined areas..."