Advocates for changes in the criminal-justice system are taking their case to Florida, the fifth state on a “Fair Sentencing and Fair Chances” tour aimed at reducing the number of prisoners across the country.

The bipartisan Coalition for Public Safety, which is backing the tour, says the United States has less than 5 percent of the world’s population, but nearly a quarter of its prisoners. American taxpayers spend $80 billion each year to keep 2.3 million people behind bars.