A connection has been revealed between the private equity firm Bain Capital — founded by Republican presidential candidate Mitt Romney — and a company that supplies surveillance equipment to the Chinese government. A Bain-run fund has purchased the video surveillance division of the company, which claims to be the largest to supply the government’s Safe Cities program. A blind trust held by the Romney family has holdings in the company. The Chinese program involves widespread government surveillance in universities, hospitals, mosques and movie theaters.