Moderate dissident ##s and intellectuals held by police ahead of Tiananmen anniversary . Beijing accuses police of ` ` picking quarrels '' Chinese government 's stance on human rights remains unchanged since independence in March .
Moderate dissident voices and intellectuals held by police ahead of Tiananmen anniversary . Beijing accuses activists of `` picking quarrels '' Chinese government 's stance on human rights remains unchanged since crackdown in 1989 .