Context: American University economist George Ayittey accused the Arab government of Sudan of practicing acts of racism against black citizens. According to Ayittey, "In Sudan... the Arabs monopolized power and excluded blacks – Arab apartheid." Many African commentators joined Ayittey in accusing Sudan of practising Arab apartheid.

Question: Who accused the Arab government of practicing acts of racism?
Answer: George Ayittey

Question: Who executed the apartheid?
Answer: the Arab government

Question: Who was excluded?
Answer: blacks

Question: Where were they?
Answer: Sudan

Question: What is George Ayittey's profession? 
Answer: economist