Pope Francis has called for efforts to ensure anti-Semitism is "banned from the human community".
Francis has lamented current anti-Semitic attitudes as he greeted visiting rabbis from the World Congress of Mountain Jews from the Caucasus at the Vatican.
He did not mention last month's massacre at a synagogue in Pittsburgh, in which 11 people were killed.
But he referred to the upcoming 80th anniversary of Kristallnacht, when German Nazis attacked Jews and their property, and the recent 75th anniversary of the roundup and deportation of Jews in Rome, when the city was under Nazi occupation.
"Sadly, anti-Semitic attitudes are also present in our own times," the Pope said on Monday.
"As I have often repeated, a Christian cannot be an anti-Semite; we share the same roots.
He added: "We are called to commit ourselves to ensure anti-Semitism is banned from the human community."
Australian Associated Press