Indeed, in 1993, Zigong officials began to seize more than 2,500 acres of farm land, on which 30,000 farmers had lived for generations. The farmers were offered small living stipends and what they considered inadequate compensation, so they refuse to relocate and organised sit-ins. Police came to the villages many times to "clean out" villagers. Between 1995 and 2005, Mr. Liu Zhengyou, who had been designated by the farmers as their leader, petitioned the government for investigation and review. On April 20, 2005, villagers tried to hand in a petition to the Mayor of Zigong, but were stopped by the police. During the altercation with the police, several villagers were badly injured, including Mr. Liu. Mr. Liu and several others were then briefly detained for "disorderly conduct" and "obstruction of traffic".