Saying that the Holocaust should never be forgotten, human rights activist Elie Wiesel called for Iranian President Mahmoud Ahmadinejad to be arrested when he visits foreign countries because of his calls for genocide. “We should arrest Ahmadinejad when he comes to the world,” Wiesel, 81, a Holocaust survivor and professor at Boston University to applause. Ahmadinejad is president of an ancient and great country,” Wiesel said. “He said there was no Holocaust, but I will produce one. And he even says how … 6 million Jews in Israel, he wants to destroy them. “A 1986 Nobel Peace Prize winner known internationally for his human rights work, Wiesel spoke to about 1,200 guests at a banquet honoring the memory of the late Rebbe Menachem Mendel Schneerson, former head of Chabad who died in 1994; the group has several centers in metro Detroit that promote Jewish education and good deeds.