If I had to guess it's probably because they look a lot different than most Pakistani's...looks are usually the strongest influencer when it comes to discrimination.
I wonder why more of them don't go to Tajikistan/Uzbekistan/Kyrgyzstan where they would fit in ethnically. Probably because the socio-economic conditions there are still pretty poor, and the majority of their (usually very large) families are in Afghanistan/Pakistan/Iran.
> If I had to guess it's probably because they look a lot different than most Pakistani's...looks are usually the strongest influencer when it comes to discrimination.
A large majority of Hazaras identify themselves as 'shia muslim'[1]. While those, who target and kill Hazaras in Pakistan, belong to different sunni[2] militant/terrorist groups (for example, taliban, lashkar-e-jhangvi[3], their affiliated groups and offshoots in Pakistan) as they consider all 'shia muslim' heretics and fair to be killed. Since Hazaras look different and easily recognizable from a typical Pakistani, they are easy targets for their terrorist activities.
> I wonder why more of them don't go to Tajikistan/Uzbekistan/Kyrgyzstan where they would fit in ethnically. Probably because the socio-economic conditions there are still pretty poor, and the majority of their (usually very large) families are in Afghanistan/Pakistan/Iran.
I think you are not very far off the mark in your assumption here. :)
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[1] I'm a Hazara from Baluchistan, Pakistan.
[2] Btw, not all sunni muslims are extremist and after shia muslim. It's mostly follower of one particular sunni muslim sect (in Pakistan particularly): Deobandi ( https://en.wikipedia.org/wiki/Deobandi)