Jews and Christians have never killed like these muslims are doing now. Througout history you can never point to a time when we did the same as they are doing to us, because we are Christian or Jewish.
I am quite sure that today we will be arranging the meeting of several Muslims and their 72 virgins.
You may not think of that as a Christian or Jew killing a Muslim in a Muslim country but they may see it differently.
Never say never.
Jews haven't perpetrated any major bloodbaths since the time of Bar Kochba, but they had their innings prior to that. Canaanites, Amalekites, Midianites and all that.
Christians went thru long periods where they enthusiastically slaughtered Jews, Muslims and other Christians who didn't believe "right."
It is not historically accurate to say Christians never did as some Muslims do now. Such killing has not been done on a mass scale by Christians (for religious reasons) for at least a couple centuries now. But we are by now means immune just because we are Christians.