The death of 56-year-old watermelon seller Deng Zhengjia in July in the central province of Hunan -- which domestic media blamed on the local enforcement officers, or "chengguan", but the county government said happened spontaneously -- had triggered public fury over perceived abuse of power.
Four chengguan convicted of intentional injury over the event received sentences of three and a half, four, six and 11 years, the official news agency Xinhua said on a social media account.
But a news portal linked to the government of Linwu county, where the incident took place, said Deng suddenly fell to the ground during the confrontation and died.
Users of Sina Weibo, China's version of Twitter, lambasted the verdict as unfairly lenient and protecting government employees.
Also Read
"They take a life but don't pay with a life, they are all people but their lives are not treated the same! But this is China, where things are not done according to logic," one wrote.
Chengguan, who are tasked with enforcing local government regulations, have gained particular notoriety for abusing their power, although officials at all levels have been targets of scorn.
National leaders have repeatedly pledged this year to crack down on what they acknowledge is widespread corruption and to bolster the rule of law.
China's judiciary remains subject to strict political control.