There's not much point being part of a resistance when the large majority of your countrymen are opposed to you and your values. Resisting foreign invaders is one thing, and makes sense: the invaders are generally a small fraction of the size of the populace, and are using some type of force to gain control. But resisting the majority of your country's population is something altogether different, and really quite futile.

Pakistanis who flee Pakistan because they don't want to live that way are doing the right thing; most people there like the way things are there, so trying to change their opinions is not likely to go well, and very likely to get you imprisoned or killed.

I think you don't realize that when something is all you've ever known, you don't realize it's wrong. I know a lot of those immigrants who went abroad to study, swearing they'd come home to improve things, but once they were abroad they realized how much better life is with the freedoms in the UK or US. And once they realized that, they wanted to raise their families in that environment. Would you grudge them that?