POLICE prepared to impose a virtual blockade on Sutherland Shire last night, erecting checkpoints on every main access road to prevent a repeat of the race riots at Cronulla. And State Parliament will be recalled tomorrow to give police emergency powers to lock down parts of Sydney, ban the sale of alcohol, conduct random searches and confiscate vehicles. An extra 450 police took to the streets in expectation of a third night of racial tension. Officers restricted in-bound traffic to Cronulla to one lane and checked every car passing a checkpoint on Kingsway, at the corner of Wilbar Avenue, from...