Farrakhan, 76, spoke for nearly three hours Sunday at a gathering to observe the religious group's Holy Day of Atonement, which also marked the 14th anniversary of the Million Man March in Washington, the (Memphis) Commercial Appeal reported, citing a source who attended the speech.
"The Earth can't take 6.5 billion people. We just can't feed that many. So what are you going to do? Kill as many as you can. We have to develop a science that kills them and makes it look as though they died from some disease," Farrakhan said, adding that many wise people won't take the vaccine.
"The black community has become toxic and must cleanse and restore peace from within," Farrakhan said.
Farrakhan told listeners not to become complacent as a result of Barack Obama's election as the United States' first black president, the newspaper said.
"You have to understand that he was voted in to take on the affairs of a nation, not yours and mine. He is the American president, not the black president," he said.