Kiryat Arba's Chief Rabbi Dov Lior compared US President Barak Obama to Haman - an enemy of the Jews in the Book of Esther- during a conference in the West Bank this week, Army Radio reported Friday.He also labeled the Obama a "kushi" of the West, a derogatory term used to describe people of African descent.In the same speech, the rabbi branded the Europeans as "Nazi collaborators," and called for increased settlement activity in the West Bank "to eradicate the jungle."In reaction to his comments, MK Zahava Gal-On (Meretz) called on Attorney-General Yehuda Weinstein to launch an investigation against the rabbi for incitement to racism."Rabbi Lior's comments stink of racism. This does not surprise me from someone who started with incitement against Arabs, and now called the US president names taken from the era of slavery. The rabbi belongs in prison," said Gal-On.