"Those who criticize it are really saying no police strategy will work, which is somewhat a counsel of despair."

But a growing number of criminologists now also give credit to police strategies.

For a government willing to commit the resources, the new police strategies are genuinely promising.

The police strategy led to large numbers of people being denied access to the rally, which is a democratic right.

He said, however, that police strategies for dealing with street violence "have begun to show some effect."

And many of the officials said that the police strategies were used only sporadically over the last year.

And they also portrayed the change in police strategy as a response to last year's low turnout.

Protesters said the police strategy seemed to be contain, surge and arrest.

The key to the police strategy was surrounding and closing off a large area around the bank's headquarters.

The police strategy has been to arrest suspects on minor charges, and they did that again today.