God gave us His Son to listen to Him (Matthew 17:5). It is our duty to evangelize the Jews even more, in the context of the horrors of 20c. The "ecumenical service" is an oxymoron; a prayer to Christ to prevent another Kristallnacht would indeed be quite appropriate.
SSPX antisemites
What makes you think they were anti-Semites? I believe I explained fully why the common prayer in a Catholic Church was inappropriate logically, evangelistically and legally for the canons of the Church herself. Am I now an "antisemite"?
It would seem that many here would say the Church was anti-Semitic for 1960 years. Individual Catholics may have been, but they would even deem the teachings prior to VII as anti-Semitic. Hmmmm.....