"If a man lie with a beast"
And if a man lie with a beast, he shall surely be put to death: and ye shall slay the beast. And if a woman approach unto any beast, and lie down thereto, thou shalt kill the woman, and the beast: they shall surely be put to death; their blood shall be upon them" -- Leviticus 20:15-16
Christian Identity extremists interpret "beast" in this verse to mean "person of color", making sexual intercourse between races a capital crime.
"The beast of the earth"
The Mark of Cain