In Michigan, there are currently around 43,000 residents on the state online sex offender registry, out of about 800,000 people nationwide on some state registry. Michigan law is especially strict about who must register as a sex offender, with many misdemeanor convictions automatically requiring registry.
Due at least in part to this, Michigan has the fourth-highest population of residents on its sex offender registry of any state. Among the things someone can be put on the registry for is a second conviction for public urination, the Lansing State Journal says. Only three other states register people as sex offenders for this crime.