Prime Minister Antonis Samaras of Greece suggested on Monday that he wanted to eradicate Golden Dawn, the neo-fascist xenophobic political party that is now facing a major government crackdown on charges it is a criminal organization involved in murder, attempted murder, blackmail and other crimes. Mr. Samaras, who was visiting New York for the meeting of the United Nations General Assembly, said in a reception sponsored by the American Jewish Committee that his government had no tolerance for the party’s anti-immigrant intimidation tactics and other fascist behavior. “We are dedicated in completely eradicating such a shame,” he said. “We must do it within the context of our democratic Constitution. But we have to go all the way and do whatever it takes.” His remarks appeared to go beyond previous statements about trying to curb the power of Golden Dawn, which has 18 members in Parliament. Over the weekend, the police arrested six of them, including the party’s leader.