Thousands of protesters marched through central Hong Kong Sunday, demanding the release of five missing booksellers who are feared to have been detained by authorities in mainland China.<br />The five are from Hong Kong's Mighty Current publishing house known for books critical of Beijing.<br />Their disappearance has fueled fears that freedoms in the semi-autonomous Chinese city are being eroded.<br />The US State Department and European Union have expressed concern.<br />The latest to vanish is Lee Bo, 65, last seen in Hong Kong on December 30.<br />Three others earlier went missing in southern China and one in Thailand.<br />In 2014 tens of thousands of protesters brought parts of Hong Kong to a standstill for more than two months after Beijing imposed restrictions on planned democratic elections for the city's next leader.
