Article Photos: Pakistan: Gunmen kill 7 teachers, aid workers 3/5

A Pakistani police officer, left, talks on the radio while cameramen flim the site of a blast in Karachi, Pakistan, Tuesday, Jan. 1, 2013. At least 30 people were injured when a bomb went off in the port city of Karachi just as a large political rally was dispersing. A Senior police officer said the bomb was planted in a motorcycle parked amid a crowd of buses for political workers returning from the rally held by the Muttahida Qaumi Movement, the dominant political party in Karachi.  (AP Photo/Shakil Adil)