From the New York Times:
As Justice Department officials began meeting with community leaders in Baltimore this week in the early stages of their civil rights inquiry into the death of Freddie Gray, they heard repeated complaints about a state law that gives special legal protections to police officers suspected of abusing their power.
The law is similar to at least a dozen across the country, commonly known as police officers’ bills of rights. But Maryland’s, enacted in the early 1970s, was the first and goes the furthest in offering layers of legal protection to police officers. Among its provisions is one that gives officers 10 days before they have to talk to investigators….
The United States Supreme Court in 1967 determined that because police officers had in some instances been deprived of their constitutional right against self-incrimination, officers could not be compelled to give evidence against themselves, including as part of administrative investigations.
Since then, the extra layer of legal protection for officers has expanded, in large part because of the power of police unions, which have had similar rules inserted in union contracts and have frequently paid for television advertisements that label politicians who disagree with them as antipolice. In Maryland, law enforcement unions have donated tens of thousands of dollars to state and local elected officials, including to Ms. Rawlings-Blake.