How is MLKs letter to Birmingham similar to franklin's Roosevelt four freedom?

Eleanor’s unwavering commitment to human freedom led to her natural support for the Civil Rights Movement. Her activism and opposition to segregation during the post-World War II era drew the ire of the Ku Klux Klan and led to her investigation by J. Edgar Hoover and the FBI. By the late 1950s and early 1960s, she had developed close ties to Dr. King.

The answer is 2) to show the depth of the colonists’ commitment to independence