INDIANAPOLIS (AP) — A black Indiana congressman has used a lynching metaphor to describe tea party policies he says would turn minorities into "second class citizens."Democrat Andre Carson told a crowd at a Congressional Black Caucus event in Miami that some tea party politicians would like to see blacks "hanging on a tree." Tea party supporters demanded an apology.The comments from Caron's speech last week were first posted online Tuesday by the Glenn Beck-founded website The Blaze.U.S. Rep. Allen West of Florida said on Fox & Friends that he might quit as the lone Republican member of the black caucus. Carson is among its top leaders.Carson spokesman Jason Tomsci didn't immediately return an Associated Press message seeking comment Wednesday. He told USA Today that Carson stands by his comments.