Moslems want to kill the Jews or convert them to Islam. The Christians made so many attempts in the past to do the same. Why not simply do your thing, and forget what the other guy believes in? This religion thing creates lots of irrational behaviors. Now that I dissed the Moslem, and the Christians, I feel that I have to be an equal opportunity guy. The Jews who have a nice place in Brooklyn or Long Island, why are they leaving to go and live next to the barbarian ragheads? Its all Greek to me!
The key here is "in the past" and it is a long ago past and it is not part of Christian Belief. It is nowhere in the Gospels and the OT "genocide" was limited to specified groups in a specified location. With Islam the genocide is in the Koran. It is universal for non-Mohammedans and it is in practice now as it was in the 7th-17th centuries.
"Live and let live" is a western, liberal (classic) concept. It is foreign to Islam, and was only raised to a status of core principle on the world stage with the advent of America.