Final answer:
The claim that Malcolm X's promotion within the Nation of Islam was related to his critique of the United States during President Kennedy's assassination is false. Malcolm X had left the Nation of Islam before his assassination in 1965 by its supporters.
Step-by-step explanation:
The statement that Malcolm X was promoted within the Nation of Islam after he critiqued the United States during the time of President John Kennedy's assassination is False. Malcolm X, indeed a radical black leader within the Nation of Islam, later ended his affiliation with the organization in the last year of his life. His split from the Nation of Islam occurred after his pilgrimage to Mecca and his trip to Africa in 1964, where he adopted a more inclusive perspective regarding interracial cooperation.
Before his departure from the Nation of Islam, Malcolm X was a prominent figure who advocated for the separation of Black and White Americans and called for the empowerment of African Americans by any means necessary. His assassination in 1965 was carried out by supporters of the Nation of Islam, which he had left. His death marked a tragic end to a period of transformation for Malcolm X and a significant moment in the history of the civil rights movement in the United States.