Which amateur wrote this script. It reeks of irregularities and is filled with pre-2000's, in fact pre-1975 narrative.
If Metro Police cannot handle situation then Reserve Police is called in to boost numbers. They are then assisted by FC or Rangers, depending on city/province. Army is called in during emergency if a specialized Ops is to take place, otherwise FC/rangers are equipped to handle such situations. So the first irregularity is jumping from Police directly to Army to control crowd, completely by-passing Paramilitary forces.
Secondly, if Intel has information of such an incident taking place, then 90% of the situation is resolved already. Intel places assets and mixes with the crowd to search and locate such perpetrators.
Thirdly, to escalate matters against Army, a 1971-type narrative is orchestrated that "Army will fire at civilians." Police doesn't have weapons, right ? Till 80's, Police were sent in with batons and Army with guns, that has changed.
Fourthly, with CCTV cameras and other kinds of surveillance, its not difficult to track who fired gun shots and fled the scene. These kind of investigations have become common in attacks in Pakistan and yield results. Geo-fencing of mobiles is another way.
So, conclusion is that Army is being shown as villain which will fire at civilians. Current government is being shown inept and backed by Army, portraying police as ineffective so Govt will call Army to save the day by firing at crowd. True that N-league is corrupt to the bone and doesn't deserve to be in Parliament, but this text is a poor attempt at political front.