Marilyn Mosby is the Baltimore prosecutor who, along with then-mayor Stephanie Rawlings-Blake, undermined police morale following the death of Freddie Gray in 2015. Mosby did it by prosecuting half a dozen police officers who weren't guilty of wrongdoing. She failed to convict any of them. The city's failure to support its police force led to a surge in violent crime in the months and years following Gray's death. We wrote