Final answer:
Tommie Smith and John Carlos were the two athletes suspended and given 48 hours to leave Mexico. They raised their fists in a black power salute during the 1968 Summer Olympics in Mexico City.
Step-by-step explanation:
The two athletes that were suspended and given 48 hours to leave Mexico were Tommie Smith and John Carlos. They were both track and field athletes who competed in the 1968 Summer Olympics held in Mexico City. During the medal ceremony, they raised their fists in a black power salute as a protest against racial inequality in the United States.