Newly minted Attorney General Jeff Sessions was in St. Louis, the latest stop on his tour to promote his muscular solution to what he called the “dangerous new trend” of the rising national violent crime rate. Addressing a crowd of more than 200 federal and local law enforcement officials at the city’s towering federal courthouse in late March, he vowed to “use every lawful tool we have to get the most dangerous offenders off America’s streets.” The Trump Justice Department has pushed a variety of strategies for reducing violent crime.