People who moved out and sattled in the West do not hate Non-Muslims. Only a little percentage of em does that. If you ever been to USA / Canada. Tell you a little bit about Canada. There is a huge amount of Muslims here and Hindues, both live in peace and harmany. USA started treating Muslims like dirt ever since USA landed on Afghanistan.
Pakistani Muslims live aboard because they wish choose a better life for their family, and their kids. And they dont hate Non-Muslims passionately. 
If you are talking about that little amount I stated in the previous paragraph? Then I must say that people like that are in every country.