We shouldn't have to depend on the luck of having a kid with a cellphone around to catch police misconduct (or to document that there was no misconduct); it's time for all law enforcement to be monitored with "cop cams" that capture all their interactions with citizens. Image via Wikipedia
One simple suggestion, a generalization of the requirement that all police interrogations be videotaped that State Sen. Barack Obama managed to write into the Illinois statute books: build a cell-phone-type movie camera with sound into police headgear, and require that it be turned on at the beginning of every interaction with a civilian. Sunlight is the best disinfectant. And in the cases where it's the civilian who acts aggressively, the videotape will help defend the cop against a false accusation of misconduct.