Instead of "random searches," London police are searching for specific targets:
Police are still on high alert in London amid fears that a third terrorist cell could be plotting another strike on the capital.
Thousands of officers have been on the streets and guarding Tube and overland rail stations.
British Transport Police have been targeting specific ethnic groups for "intelligence-led" stop-and-searches as part of their heightened security measures.
BTP Chief Constable Ian Johnston said that his officers would not "waste time searching old white ladies".
Meanwhile, back in the US …