Sorry, but that does sound like a justification. Jiye Sindh and MQM are both extremists.
I live in Karachi at that time and saw the change of death MQM brought.
Even in interior Sindh where Jiye Sindh had some area’s under their control, they did not torture the population en masse the way the MQM do.
JI was known for beating a lot of people, but not the massacres like the MQM.
Mainstream parties like PML,PPP,PTI have their ‘thugs’, but again they are not accused of the same things as the MQM. I have never heard of Sharif being called the ‘don’ of Lahore.