Jesus did not damn the Jewish people, his people.
Paul of Tarsus ,who founded Christianity, wrote the letter to his followers telling them that the Jews killed Jesus therefore depriving them of Salvation. Paul never met Jesus, came to Jerusalem decades after Jesus died.
That saying, plus other things he wrote made some of those who became Christians to turn against the Jews.
It was whoever wrote John's book the one who showed more anger against the Jews, not shown in previous books, about 100 years after Jesus had died.
The Roman Empire fell, about 200 years later, and all of those books were chosen by those in Rome who took over, they were Christians by then.
There are Christians who choose to follow John's anger and hatred for the Jews and damn them. It got to the point when after the Romans took over when someone damned all the Jews for all eternity.
The waiting for Jesus to return and bring peace, and him not returning, makes some Christians turn against the Jews every now and then.
NOTHING in the NT is new. It is all borrowed from Jewish writings, writings even Jesus and those in his time would have been aware of, if they followed the religion. So, nothing which is attributed as being original by Jesus was original.
Those who wrote the books in NT were literate, and had read the Hebrew Scriptures, which is where all the stories and knowledge about how the Jewish Messiah would return came from, and those....Mark, Matthew, Luke and John borrowed from those stories. Including Hillel's saying which is said in a different way.
I do not know that Jews were assaulted by Christians while the Romans were in charge. I have not found one source for that. I think it really began when Rome fell and Christianity took over, the books were put together and started being distributed throughout Christian churches, etc.
The Visigoth, Germans, and others took over conquered others and also spread their ideas against the Jews. When they conquered some of Spain they eventually changed how the Spaniards dealt with the Jews to the point that the Inquisition eventually happened.
Jews would be attacked, forced to convert, expelled, etc.
Actual pogroms would happen later:
Most of the original pogroms took place in an area that became known as the Pale of Settlement, a territory the Russian Empire acquired between 1791–1835. The Russian government forbade its new Jewish subjects from settling in Russian territory outside the Pale of Settlement, an area that included parts of present-day Lithuania, Belarus, Ukraine, Moldova and Poland.
The word pogrom comes from a Russian word meaning “to destroy, to wreak havoc, to demolish violently.” The term was ...
www.myjewishlearning.com
So, the story of a would be Jewish Messiah, out of many, was taken by an ex Jew and turned into a new ideology and turned into a new religion during the time of the Roman conquest of the Jewish homeland.
