A Philly Tax Cutter Can Mayor Nutter cure the city’s cancer? With 380 homicides recorded already this year, a spate of recent cop shootings, and one particularly gruesome cop killing that led to a nationwide manhunt, Philadelphia is among America’s most dangerous big cities. The crime issue dominated this year’s mayoral race, which Michael Nutter, a blunt and sometimes histrionic former councilman, eventually won. But while crime gets the most attention, Nutter’s success as mayor will ultimately rest on improving the city’s dysfunctional economy. Notwithstanding the glitzy renaissance taking place in its center, Philadelphia is an economic basket case. The...