Final answer:
Sidney Poitier is remembered as a groundbreaking African-American actor, director, and civil rights activist who was the first Black actor to win an Academy Award for Best Actor. His performances challenged racial stereotypes, and he was an active participant in the civil rights movement, including at the March on Washington in 1963.
Step-by-step explanation:
Sidney Poitier is remembered as a pioneering African-American actor, director, and civil rights activist. His landmark achievements in the American film industry defy racial barriers, with his career spanning more than six decades. Poitier made history by becoming the first Black actor to win an Academy Award for Best Actor for his role in 'Lilies of the Field' in 1963, and he continued to break ground with his performances that challenged racial stereotypes.
Beyond his acting career, Poitier is also celebrated for his contributions to civil rights. One of his notable moments is depicted where he stood alongside fellow activists Harry Belafonte and Charlton Heston at the Lincoln Memorial during the March on Washington in 1963, which highlights his commitment to the struggle for racial equality.