New Delhi, Dec. 4 -- They wore police uniforms, carried pistols in holsters, fake Delhi police ID cards, rode on motorcycles and wore helmets to hide their faces, had adequate knowledge about police work and spoke both Hindi and English fluently. The gang of four, including two Iranians, used the disguise to rob and cheat foreigners and senior citizens. However, on November 30, they met actual cops, who busted their racket....