The Democratic National Convention has played a significant role in Black history in the United States. One of the most notable moments was during the 1964 Democratic National Convention in Atlantic City, New Jersey, where the Mississippi Freedom Democratic Party (MFDP) challenged the all-white official delegation from Mississippi. The MFDP, led by civil rights activists such as Fannie Lou Hamer and Ella Baker, demanded to be seated as the official delegation from Mississippi instead of the segregationist group.

Despite facing opposition from the Democratic Party establishment, including President Lyndon B. Johnson, the MFDP made a powerful statement about racial justice and equality. Their efforts ultimately led to reforms within the Democratic Party, including changes to delegate selection rules to promote greater representation of minorities.

The 1972 Democratic National Convention in Miami Beach, Florida, also holds significance in Black history. It was at this convention that Shirley Chisholm became the first African American woman to seek the presidential nomination from a major party. Chisholm's groundbreaking campaign paved the way for future Black candidates and inspired a new generation of activists and politicians.

Overall, the Democratic National Convention has been a platform for important moments in Black history, where issues of racial equality and justice have been raised and debated on a national stage.