When In Gilgit, a unit was deployed along with GB scouts to quell a sunni-shia issue which had taken to the roads. The unit CO didnt discriminate between sending sunni or shia soldiers to the venue for duty. He was of the opinion that a soldier was meant to do his duty regardless of his sect in faith. I think it was the correct decision. The shia soldiers among sunni soldiers stood in front of the shia protestors. 3 days later, the unit returned without any incident.
The FF units in military have a good enough strength of Pushto speaking and pathan background officers and jawans, yet punjabis like Gen RS joined FF regt too so the ratio may tilt somewhere but the duty comes foremost for any unit. Same for Baluch or Sindh Regiments having a comfortable ratio of personnel from all regions of Pakistan. Yes Pathans prefer joining FF regt just like an incident I narrated of a conversation between two pathan officers of Signals, a Maj General and a young officer, who agreed that if Signals hadn't accepted them, they would be in FF regt. In 1971, the EBRs were mainly composed of East Pakistan ethnic troops which resulted in successful mutinies so Army changed the ratios of units after that.
The issue you mention mainly concerns paramilitary forces like FC, FC of Police, Levies and Khasadars who are locals of the area and usually are deployed in their local areas. I have heard cases of Pushtuns turning on retired Pushtun officers who followed Military orders and were later gunned down by tribals, so those cases exist too.
However, tell me how hard is it to make an explosive jacket at home in Pakistan ?
In this incident, the man tried to enter Isb from Rwp. There are markets in westridge, saddar, Raja bazar, etc who sell all the material used in making this bloody jacket and there is no check balance who bought what and by whom and for what reason.
The major issue still stands. A TTP operator or sympathizer, mixed with in the society, because Pakistani society doesn't shun TTP styled mindset since extremism runs deep down with in the society. It is a reality so when fingers are pointed at crossings on border from Afghanistan into Pakistan, then the reflection should also be given that these elements do not thrive in tunnels rather they are welcomed by community to sit, eat, sleep, rest, weaponize and transported in public by public.
ICT Police is well trained, this incident is a proof of that, as the policeman could identify an old model Toyota or Suzuki car driven by ordinary citizens with isb/rwp number plates, but to stop a taxi on basis of doubt meant the policeman had a clear understanding of the duty as he kept a close watch on the passenger of the taxi and recognized the pattern of face expression, body language, dressing etc and the doubt was 100% correct, something which wasn't shown by policemen in incidents occurring in KPK. Otherwise one can say, it was mandatory by ICT policemen to stop and check every taxi and there was no suspicion but the incident occurred during routine checking. Due to culture of veil/burqa system in KPK, It can also be put forward that every picket manned by KPK police should have 2-3 lady constables, for checking lady passengers in cars.
The extremism of the society can be clearly seen in this thread. The sacrifice of life of a policeman on duty is being undermined because the inability to accept a universal fact that every coin has two sides. Humans have both good and bad sides. Coupled with judgmental nature, extremism doesn't allow an individual to think and differentiate right from wrong, It makes a human stick to an incident for life and from there on, that individual derives strength from the belief of that incident for life without understanding that variety is the very spice of life. Any profession has good or bad individuals. Lawyers, doctors, Govt employees, engineers, army officers etc.
Majority of members have not served with uniformed personnel of Pakistan whether from Police or Army, while a very few members have. These members do not understand the basics of command structure in the room of HQ and the command structure when deployed in field whether in war zone or a street of a city, the difference is always there.
To tell it straight on the face- a member who has either commanded or worked alongside uniformed policeman or soldier can understand the tragedy of loss of life of this policeman in this incident.