i think jews dont consider it a sin or a crime to do bad things to a non-jewish person. as a christian i believe its wrong to kill, lie, or steal whether the victim is a christian, jew, muslim, buddhist, atheist, hindu, etc. muslims and buddhists believe the same. jews believe its only bad to do these things to other jews but its okay to do it to a non-jew. thats their moral system. its in their religion, in their history, in their actions. its why they can kill 50,000 innocent people and not feel a shred of guilty but rather enjoy it.
Australia