Comparison of United States incarceration rate with other countries
The incarceration rate of the People's Republic of China varies depending on sources and measures. According to the World Prison Brief, the rate for only sentenced prisoners is 118 per 100,000 (as of 2015). The rate for prisoners including estimations for the number of pre-trial detainees and those in administrative detention is 164 per 100,000 (as of 2015). In a 2010 interview Harry Wu, a U.S.-based human rights activist and ex-Chinese labor camp prisoner, estimates that "in the last 60 years, more than 40–50 million people" were in Chinese labor camps, but that period includes the mass incarcerations of the 1950s or the Cultural Revolution (1966-1976) and is not representative of modern China.
United States incarceration rate
Looking at reasons for imprisonment will further clarify why the incarceration rate and length of sentences are so high. The practice of imposing longer prison sentences on repeat offenders is common in many countries but the three-strikes laws in the U.S. with mandatory 25 year imprisonment — implemented in many states in the 1990s — are statutes enacted by state governments in the United States which mandate state courts to impose harsher sentences on habitual offenders who are previously convicted of two prior serious criminal offenses and then commit a third.