A Maryland-based mosque held a memorial celebration Sunday for an Islamist assassin who was convicted of murdering a Pakistani governor for criticizing the country’s blasphemy laws. The Gulzar E Madina mosque hosted an “Urs” for convicted murderer Mumtaz Qadri, reported Ehsan Rehan of the Rabwah Times, a Pakistan-based news agency. Urs is a traditional death anniversary usually reserved for Sufi saints celebrated by Muslims in South Asia. A Pakistani high court charged Qadri with murder after he killed Salman Taseer, the former governor of Pakistan’s Punjab province. Qadri, who was part of Taseer’s bodyguard, shot him 27 times with an...