In a coupe
Even if a black man/woman becomes successful enough to purchase a high class vehicle like a Mercedes Benz, many people will still see him/her as a “nigga”
In this way, black people are “trapped” by others' perception of them and their race
The coupe is a double entendre, you are literally a black man in a coupe, a two door car. but even if you own a nice black benz you are still a black man in a cage. West plays with the dual meaning of coupe (car) vs coup (cage).
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