Nobel Peace Prize laureate, Malala Yousafzai, has criticized China for its treatment of human rights activist and Peace Prize winner, Liu Xiaobo, who died last week.<br/><br/>Speaking reporters in Nigeria, she said it is really tragic how States deny people freedom of expression and speech. Yousafzai said, Liu was one of a few Nobel laureates who could not attend the award ceremony. Liu had been in jail for allegedly inciting subversion of state power.