On Tuesday I speculated that Pakistan’s former Prime Minister Imran Khan, now the opposition leader, was so popular that he might have to be shot by his enemies to prevent him from coming back to power. This was not a throwaway statement. After Sri Lanka and Lebanon, whose political murder rate since the second world war has been off the charts, Pakistan with 44 political murders comes a clear third, not including the peripheral hundreds if not thousands who have died in bombings.