True, the attack stood out for the spot where it took place, and the toll was higher than the usual daily tick-tick of slayings in ones, twos, sixes, 10s.In the previous week, at least 75 people were killed in the city, including a man who was beheaded, another suspended by handcuffs from a chain-link fence and four whose bodies were piled on a sidewalk.Those killings went largely unnoticed outsid