Definitions for "crackdown"
severely repressive actions
Crackdown is a free-form urban action game set for release in early 2007. Known as "Riot Act" in Japan and developed by Realtime Worlds, Crackdown was created by David Jones, who helped create the original Grand Theft Auto and Lemmings.
The concentration of police resources on a particular problem area, such as street-level drug dealing, to eradicate or displace criminal activity.