almost every political party in Pakistan has a private army,thugs,goondas,criminlas.About Karachi,it has a history of ethnic & sectarian voilence going for more then 5 decades. Karachi is known as the killing fields of Pakistan. Of recent ISIS,Taliban & othe extremist organisations have their presence in Karachi who r against secular parties. Another report says that there r more guns in Karachi then Fata. Lastly If MQM is involved in terrorism why don't u ban the political party,what r u waiting for,another method is put them on exit control list so that they travel outside any country including India.