Predictions on surveillance cameras

I wonder whether there will be a difference in the change in crime rates between the summer and winter with these cameras. Surely there are fewer crimes that take place in the winter, but my guess is that the drop will be smaller then because in Chicago (one of the cities mentioned in the story) most people where some hood or face mask, thus negating the benefit of the camera.

Most people in the United States have no reservations regarding the use of video cameras in public places as a way to improve safety, according to a poll by TNS released by the Washington Post and ABC News. 71 per cent of respondents support having public surveillance cameras, while 25 per cent do not. . . . .