I thought it would be interesting to see what Christians think about Jews and vice-versa.
Judaism and Christianity are two different religions. They share a small amount of mutual history, in that many of the original founders of Christianity began as Jews. But they created a different religion, and became something else. Christianity shares some textual heritage with Judaism, because they claim our scriptures as part of their Bible, but that sharing is minimal, as their uses and interpretations of our texts are incompatible with Judaism, and contrary to the tradition that produced them.
Despite the radical differences of incompatible theologies, Judaism and Christianity do have some common ground together, but it often proves hard to stand together on it, due to the lengthy history of Christian oppression of Jews, and the frequency which with replacement theology still appears in Christian communities. Nonetheless, some interfaith dialogues and relationships have produced promising and fruitful results.
I just want to clarify one thing: a Christian, by definition, is already Jewish. Because Christians have never disclaimed the Tanakh, also known as Old Testament and they have never changed a word of it.
Nope. Christians are not Jewish. A Jew is someone who was born to a Jewish mother, or who has been properly converted to Judaism according to Jewish law. Christians are non-Jews, and moreover, most of the doctrines of Christianity are incompatible with Judaism, and therefore the two religions are mutually exclusive.
Whether the Christians have ever changed any of the Tanach is subject to debate, seeing as most Christians read the Tanach in translation, most of which contain errors, some of which have been used to create points of Christian doctrine.
But whether the Christians have disclaimed the Tanach or not doesn't matter, since they don't follow the laws of the Torah, usually misunderstand the laws and the prophecies in the Tanach, and in fact regularly break numerous important commandments-- which is fine for them, since the commandments were given to the Jewish People, and Christians are not Jewish.
But it is entirely improper for Christians to claim to be Jewish: that is replacement theology, and is disrespectful at best, anti-Semitic at worst.