if someone wants to leave a country, they should have the freedom to do so.
There are only like 10 million Mohajirs in Pakistan and I doubt all of them want or would leave.
But honestly if they wanted to leave, they would have left by now. They probably don't have the means or resources to do so.
Its not about 10 million or 20 million. That fact they are still called foreigners and the fact that we have a Punjabi redneck asking them to "Go back where you came from" is very disgusting.
Pakistan wasn't formed just for Punjabi Muslims, it was formed for all the Muslims of the Sub continent who wanted to be a Pakistani. If it wasn't for the Muhajirs and Muslim Bangalis Pakistan would have never formed.