I don't have to paint Mcgregor as a racist he did that himself:
Leading up to his 2015 match against Brazilian fighter Jose Aldo, McGregor repeatedly resorted to disgustingly bigoted attacks. In a reference to colonialism, McGregor said, "If this was a different time, I would invade his favela on horseback and kill anyone that was not fit to work." McGregor later said, "What I really want to do is turn his favela into a Reebok sweatshop." McGregor also said of Aldo, in an apparent joke targeting Latinos, "I think I'm going to have him come and clean up my airplane."
Favela - A favela (Portuguese pronunciation: [faˈvɛlɐ]), Portuguese for slum, is a low-income historically informal urban area in Brazil. The first favela, presently known as Providência in the center of Rio de Janeiro, appeared in the late 19th century, built by soldiers who had nowhere to live following the Canudos War. Some of the first settlements were called bairros africanos (African neighborhoods). Over the years, many former enslaved Africans moved in.