Nice Cherry picking.
Augustine argued that the Jews should be left alive and suffering as a perpetual reminder of their murder of Christ. ike his anti-Jewish teacher, Ambrose of Milan, he defined Jews as a special subset of those damned to hell. Augustine claimed to "love" the Jews but as a means to convert them to Christianity. Sometimes he identified all Jews with the evil Judas.
Ephraim the Syrian wrote polemics against Jews in the 4th century, St. Jerome identified Jews with Judas Iscariot and the immoral use of money ("Judas is cursed, that in Judas the Jews may be accursed… their prayers turn into sins").
f you look at the 13 century European Christianity, they had Blood libels and Host desecration, Their Expulsion of from Spain, Pope Paul IV issued papal bull Cum nimis absurdum, Luther's 1543 pamphlet On the "Jews and Their Lies", 18th century Poland Russian Orthodox Church's policies on Jews, 1772 Catherine II, the empress of Russia, in the 19 century Pope Pius VII (1800-1823) built the walls of the Jewish ghetto in Rome, and they were restricted to the ghettos throughout the Papal States in 1870.
In the 20th century American Jews petitioned Pope Benedict XV on behalf of the Polish Jews, they go in a Pope who was compromised for them.
web.archive.org/web/20091016114240/http://www.firstthings.com/article/2007/01/the-holocaust-what-was-not-said-10
In the Middle Ages. The Catholic Church Alleged That the Talmud Contained Blasphemous references of Jesus and censored it in 521.
archive.org/details/judaismontrialje00macc
In the book Judaism on trail, Jewish converts to Christianity, such as Pablo Christiani and Nicholas Donin claimed the Talmud contained insulting references to Jesus.
In 1681 Johann Christoph Wagenseil Translated a collection of Anti-Christian Polemics from Jewish sources, the name of the book is "Flaming Arrows of Satan, that is, the secret and horrible books of the Jews against Christ, God and the Christian religion, includes Jesus in the Talmud. The Frist Book Dedicated to topic of Jesus in the Talmud was a Latin book "Jesus in the Talmude" by Rudodlf Martin Meelführer in 1699. In 1700, Johann Andreas Eisenmenger published Entdecktes Judenthum (Judaism Unmasked) Which not only includes Jesus in the Talmud but became the basis of a lot of anti-semitic literature like "The Talmud Unmasked in 1892 by Justinas Bonaventure.
washingtoncitypaper.com/columns/straight-dope/article/20847401/does-martin-luther-bear-some-responsibility-for-the-holocaust
tl;dr
Christianity has plenty of anti-semitism in it's history.
There is also nothing wrong with conversion if it's followed through completely.