WHAT'S the point? In the wake of the latest terrorist attacks in London, Mayor Bloomberg and the NYPD announced plans to conduct random searches of packages and backpacks carried by subway riders. "Random," of course, is a synonym for blind. And we all know what it means when you put blind bureaucrats in charge of homeland security: Grannies and toddlers, prepare to be on heightened grope alert. Reassuring al Qaeda operatives everywhere, Police Commissioner Ray Kelly pledged that his officers would not engage in "racial profiling." He also emphasized that passengers would be free to "turn around and leave" instead...