Jerusalem, July 1 - Italian Premier Enrico Letta on Monday said "the Shoah is an open wound which tears the land of Jerusalem and will always concern us". Speaking during a visit to Jerusalem, Letta cited late Cardinal Carlo Maria Martini - who once said "it is not enough to be against, it is necessary to be for the Jewish people" - and also noted that 'anti-Semitism is a cancer of humanity and a threat for the peace of all populations". "We must not and do not want to ever let our guard down," especially "at a time when the germs of anti-Semitism appear in our beloved Europe," Letta said after visiting the Holocaust memorial in Jerusalem. The premier said he will attend ceremonies in the fall commemorating the 70th anniversary of the deportation of Roman Jews. "This year, which marks the 70th anniversary of the insurrection of Warsaw's Ghetto will also mark the 70 years since the deportation of Roman Jews, following the degeneration sparked by the racial laws. "I will attend on behalf of my government the commemoration of the latter and other initiatives organized by Jewish communities".