Even using God's name in between racial slurs, the leader of Nation of Islam, an Islamic religious movement in the US, said death is only rightful for white people for their supposed abuses to the black community.

During his group's recent "Justice or Else" meeting in Milwaukee, Wisconsin, controversial Nation of Islam head Louis Farrakhan encouraged his army of 10,000 volunteers to kill white people if the United States government fails to give "justice" to the black community.

"You see, white people deserve to die... And they know, so they think it's us coming to do it," Farrakhan said in his three-hour sermon, a video of which was posted on YouTube last Thursday.

The controversial religious leader told his followers to "fight like hell to preserve and protect" the life God gave them.

"God is with you. That's why we say, 'Allah Akbar.' God is great. We have no weapon. We bother nobody. Then if you come to take our life, don't be surprised if you lose your own," he said.

Farrakhan nevertheless said members of the Nation of Islam should remain "non-violent, until somebody attacks us."

"We are not killers. We are not murderers. We are being murdered. And there does come a time when somebody else other than us have to feel the pain they delight in giving us," he said.

"There comes a time if it is forced upon us to fight that we must fight with those who fight with us," he added.

He also assured volunteers that he will not lead his young followers "into some place to be slaughtered."

"That's what the white man hopes for," Farrakhan said.

The religious leader also said that UFOs, which he called "wheel in the sky," will rescue his followers and carry out justice in case of a war between races.