As to "who gave a bad name to Jews ? a) The Christians in the history ? b) The Jewish people by themself ? c) Geneticialy happened ?" This is less of a question than a statement of your belief. In the case of Arabs and Islam the religion spread by subjugating others and then making their lives very hard by dengrating them and levying exorbitant taxes unless they converted. Islamic hostility to Jews dates back to the dawn of Islam when Jews refused to convert. The resault was a genocide of the Jews in Arabia. In other places being a people without power they were at the whim of the powerfull. Jews have contributed a great deal to science, culture, medicine, ... Why do you attribute a bad reputation to Jews?
Western-backed Syrian rebels say kill foreign Islamic State (Reuters)
from the article: Endangering the Jews of Iran