You obviously don't know the history of Karachi. Karachi was a major port and economic center long before and any 'muhajirs' arrived. That was the main reason mohajirs went there.
Karachi is in Sindh, and always has been.
To say it belongs to muahjirs is like saying Bradford, England belongs to the desis who are the majority in that city.
Bradford is 79% White, so can't see how you can say Asians are a majority.
I am not going to get into this argument, already had this on another thread, but the fact remains that KARACHI IS A MUHAJIR CITY. The quicker my Jat brothers accept this, the better for them.