State's Attorney Marilyn Mosby's accounting of how police treated Freddie Gray on the morning of April 12 raises real concerns about whether there is a "pattern and practice" of civil rights violations by the Baltimore police. If Ms. Mosby's account is correct, officers had no probable cause to chase Gray when he ran after making eye contact with one of them, and no probable cause to restrain, search and arrest him. One of the officers now facing charges in the incident is questioning Ms. Mosby's assertion that the knife Gray was carrying was legal, but that's irrelevant. The police had no business looking in his pockets in the first place. Six officers were involved in Gray's arrest, and if any of them found something odd about a man being arrested in such a manner, handcuffed and shackled, placed face-down and unrestrained in the back of a police van and ignored when he requested medical attention, they didn't do anything about it.