The past has gone, but if the policy continues your sentiments are valid.
Considering, what happened in Punjab, and Lahore, Punjabis are a very care-free and forgiving people. They don't believe in blood feuds that go on for generations and are very faithful Sufi minded Muslims generally.
They would take this tragedy at Wagah as Allah's will, and then will pursue the matter intelligibly, largely. I know how Punjabis think generally. They are a jolly, happy, competitive industrial people with a culture and world of their own. These are the feelings I wanted to express about them.
I believe india is behind this blast through Afghanistan. The three groups that claimed responsibility are all funded through Afghanistan by criminal, genocidal indians. All three claimed revenge, when revenge is a sin in Islam. Only revenge for the sake of God is allowed, but would you call this murder as revenge for God???
How can " jundullah" [ which in Arabic means soldiers of Allah ] claim revenge by killing innocent villagers, women and children? They are lying. They are not soliders of Allah, because by the Qur' an and Sunnah, revenge is illegal, but defence is not. So killing innocents by the hundreds is an Act of God and Act of Defence? This has been said over and over again on PDF.
These acts have been done by non-Muslims.
Only very recently, has the dubious policy been abandoned, friend. As I explained to another member in a different threat, its the ironic consequence of an accidental withdrawal convincing a hardcore addict to seek a proper one with medical care and support, because now he has seen what will happen if he doesn't get the drug for any reason, in the future. Sums up the Pakistan's history with these elements, pretty well.
This isn't a question how will Punjabis take it, please believe me that it isn't. The question is why what happened, happen. Though, I agree mostly with what you have about your brethren, I have seen and felt it with the friends I have here.
I believe that people wish to blame a foreign entity or go to denial mode, because only and only then, there's no blame on them. They can hold the events over which they had little or no control over, in this case caused by a major force, responsible. Its psychological defense mechanism and specially when something as delicate and sensitive as their religious beliefs are involved, its more than understandable. But just believe people dont wish to look within and see how radicalization and extremism in the society is responsible for these events, doesn't make it any less so. There is more than enough proof of the support in all forms, granted to these terrorists organizations by the people of Pakistan. Please take my word that had it been any foreign agency, the success rate wouldn't have been so high. These terrorists have lived and thrived in this society, taking support from the same people, whom they later target with impunity. These aren't all foreign, as ISPR wishes to tell the people for obvious reasons, they understand the root causes of it very well. Majority of the present leaders of TTP and prominent commanders have roots from Afghan Jihad, these are the same people and this isn't a conincidence. The money making methods of TTP in form of Chanda, Kherat, Zakat along with criminal activities are well understood. Suicide bombers dont come from western countries or India or solely from Afghanistan, there are Madarsas here, in this country, which can create such bombers for any task. Only recently, the infrastructure has been taken care of, during Zarb-e-Azb. You would have seen pictures of that. That and other terror factories weren't exclusively funded from foreign parties, our countrymen had done a fine job doing that, for a long time. How is it all possible, without the help of a certain segment, of Pakistanis?
This "how can" is irrelevant because extremists are capable of far worse, by twisting the teachings of religion, they falsely claim to be working for. This isn't the first time, a suicide bomber has caused such large number of casualities and this isn't the first time, the Mullahs of TTP have taken responsibility of an attack targeting innocents, to take revenge of innocents. Understand, religion is a guide, but even then, there are Muslims ready to do this work. Extremism is a disease without a cure.