WASHINGTON

FIFTY years after the Supreme Court, in Gideon v. Wainwright, guaranteed legal representation to poor people charged with serious crimes, low-income criminal defendants, particularly black ones, are significantly worse off.

Don’t blame public defenders, who are usually overwhelmed. The problem lies with power-drunk prosecutors — I know, because I used to be one — and “tough on crime” lawmakers, who have enacted some of the world’s harshest sentencing laws. They mean well, but have created a system that makes a mockery of “equal justice under the law.” A black man without a high school diploma is more likely to be in prison than to have a job.

A poor person has a much greater chance of being incarcerated now than when Gideon was decided, 50 years ago today. This is not because of increased criminality — violent crime has plunged from its peak in the early 1990s — but because of prosecutorial policies that essentially target the poor and relegate their lawyers to negotiating guilty pleas, rather than mounting a defense.

After Gideon, things got better for poor defendants in the short term. Thousands who had not had lawyers at trial were released from jail. Many states and localities created public defenders’ offices. But political and legal developments soon eroded those achievements.