WASHINGTON (AP) — The Rev. Alveda King is defending her participation in Glenn Beck’s rally at the Lincoln Memorial this Saturday on the 47th anniversary of her uncle’s “I have a dream” speech.

Glenn Beck’s critics say the conservative talk show host’s “Restoring America’s Honor” event shouldn’t be staged where the Rev. Martin Luther King Jr. delivered his historic speech in 1963.

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But the civil rights leader’s niece plans to speak at the rally and “sing in the choir” at Beck’s separate event for clergy — titled “America’s Divine Destiny” — Friday night at the Kennedy Center.

At a news conference today, some black ministers accused Alveda King, who campaigns against abortion in the black community, of “hijacking the dream” — a charge she rejects as laughable. King insists her uncle did not support abortion, and she says the dream he spoke of is in her genes.

Copyright 2010 The Associated Press.