The United States has the highest incarceration rate in the world. But, as bad as the American criminal justice system may be, there are places that are worse.
* The Philippines has shockingly crowded and understaffed jails, de facto run by prison gangs, and stunning long delays in the judicial process. The CNN story linked highlights a jail with 20 guards that houses 4000 inmates, some of whom have been awaiting verdicts on the charges against them for as long as 16 years, where about three-quarters of inmates for affiliated with four major gangs. Some of the crowding is caused by new war on drug policies there. About 60% of inmates in the featured jail were drug offenders.
* Indonesia regularly executes people for drug offenses.
* Saudi Arabia and Iran both have versions of Islamic criminal justice in which executions are very common and the process is systemically unfair, especially to women.