The bottom line is, that this proclamation by the pope wil make VERY little, if ANY difference in world wide anti-Semitism.
Why?
Many anti-Semites are not xtians (i.e. moslems)
Many xtians are not catholics (i.e. protestants)
Many catholics (just like r’l many Jews) are not religious AT ALL, – so, their anti-Semitism is something genetic by this point. It’s NOT based on catholic “frumkeit” or analysis of their “bible’, it’s just part of what they are, and no statement by a pope, whom they are not machshiv anyway, will make a difference in their attitudes about ANYTHING (e.g. about Jews, abortion, birth control, divorce, toayva’keit, etc.)