The public event was a show of force in Xinjiang after 43 people were killed last week in an attack at a vegetable market in the regional capital, Urumqi.
Such sentencing rallies designed to humiliate the accused and feed a public thirst for retribution were formerly common across China, but have in recent years been mostly restricted to Xinjiang and the neighbouring restive region of Tibet. That appears to speak to a separate brand of justice carried out against government critics and others accused of crimes who hail from minority ethnic groups, underscored by the announcement last week of a special one-year security crackdown in Xinjiang focusing on suspected terrorists, religious extremist groups, illegal weapons makers and terrorist training camps.
The report gave few details about the cases, but defendants whose names were reported all appeared to be Uighurs, members of the region's biggest Muslim ethnic minority group.
Yesterday, authorities said police in southwestern Xinjiang foiled a bomb plot and arrested five people. The government says more than 200 people have been detained this month in Xinjiang and 23 extremist groups broken up, though it has released no details about them.
Uighur activists say public resentment against Beijing is fueled by an influx of settlers from China's Han ethnic majority and official discrimination against minorities.
Among yesterday's cases, three defendants were convicted of using unspecified "extremely cruel methods" to kill four people, including a 3-year-old girl, in the city of Yining on April 20, 2013, according to Xinhua.