A 1993 report found that a former student leader in the revolt at Tiananmen Square was sentenced by the Chinese government to 6 years of prison and consequent torture, which involved being burned with high-voltage cattle prods and being forced to stare motionless at a blank wall for 12-14 hours per day for weeks upon end.
In a 1980-1983 global survey, Amnesty International reports allegation of political torture in the following countries: