Screams for help at China's secret 'black jails' - 27 Apr 09

Some Chinese seeking help from the central government against local injustices are instead ending up in secret detention centres controlled by local politicians. The politicians are believed to arrange for petitioners to be abducted before they reach Beijing to complain, fearing central government investigations that could hurt their reputations. The central government denies the existence of such "black jails", as Melissa Chan reports.