MQM is not a political party but a state patronized mafia.
MQM has been not only killing innocent Karachiites and political workers of different political parties such as Jamaat Islami, PPP,PML-N, MQM Haqiqi, Sunni Tehreek , JUP, ANP but has also killed its own party leaders and workers including Azeem tariq, Khalid Bin Walid, Nishat Malik, Shahood Hashmi , Naushad urf major dandy, and hundreds of others.

MQM has a history of being a aprty supporting the establishment.
MQM was in govt with PPP in 1988, with PML-N in 1991, with PPP in 1993, with PML-N in 1997, with PML-Q in 2002 and now aging with PPP in 2008.
So MQM sits in tresurary benches and has lust for power and ministries.
MQM is a party which cannot sit in opposition.

MQM has always been responsible for instability in Karachi.