The mother of slain Florida teenager Trayvon Martin and U.S. Attorney General Eric Holder will speak at the National Urban League's annual conference in Philadelphia this week.
Civil rights and voting rights are two major topics of the four-day event, which will begin Wednesday. About 6,000 participants are expected.
Holder will talk Thursday about a recent Supreme Court ruling that struck down a key provision of the Voting Rights Act.
Martin's mother, Sybrina Fulton, will speak Friday. She supports an investigation into whether her son's killer could be charged under federal civil rights laws. A jury acquitted George Zimmerman of all criminal counts in Martin's death.
The Urban League is one of the nation's oldest civil rights organizations. President Marc Morial said the conference also will focus on economic opportunities.