Jeffrey Stern in The Atlantic:
For the Hazaras, a group of Shia Muslims from Afghanistan with a large population in Pakistan, leaving the house has become a fraught enterprise. Schools have emptied, students stay home and parents try to explain to their children why people want them dead. They believe their government is at best uninterested in protecting them, and many are so traumatized they believe it's complicit. The Feb. 16 bombing killed 85 people, almost all of them Hazaras, and the number is still rising as people succumb to their wounds. About a month prior, another attack had killed 96 people who were also almost all Hazaras. The victims are not bystanders; they are a people who are being exterminated.
The group doing the killing is called Lashkar e Jhangvi, “The Army of Jhangvi” or LEJ. They are Sunnis whose agenda is not much more nuanced than killing Shias. Though South Asia is a region rife with internecine conflict, with factions who have fought each other for all of recent history over land and religion, these attacks are unique. Even in a region violence visits far too often, what's happening now is singular, and it's getting worse.
First it was snipers picking off civilians, then LEJ members began stopping busses, shooting Shia passengers and leaving their bodies on the roadsides. Now, LEJ is using massive bombs in places frequented by Shia civilians: social clubs, computer cafes, markets and schools. About 1,300 people have been killed in these attacks since 1999, according to a website dedicated to raising awareness about them. More than 200 have been killed so far this year.