Al Jazeera News :Top police chiefs, prosecutors and sheriffs from around the United States have called for reforms that would reduce the country’s prison population.The US is home to five percent of the world’s population – and holds around 25 percent of the world’s prisoners. It has the highest incarceration rate among developed countries, largely due to sentences that are disproportionately harsh compared to other nations.US prison cells are often filled with drug addicts, non-violent petty criminals, or prisoners with psychiatric problems. Many serve sentences that are so long that they often lose any chance for rehabilitation.”We are launching this group with a twin goal to protect public safety and reducing incarceration,” Ronal Serpas, a former US police superintendent, said on Wednesday.