ISLAMABAD- Muttahida Qaumi Movement (MQM) Senator Khalid Maqbool Siddiqui today condemned the assault on national institutions. “Occupation of Pakistan Television (PTV) and attack on national institutions by the protesters is condemnable,” Siddiqui regretted. He also said that if there was any conspiracy behind Model Town tragedy, it must be exposed. He added that the use of violence was not the appropriate way to get demands fulfilled.