Michael Brown and Eric Garner

Two St. Louis men pleaded guilty Tuesday to federal charges that they planned a bomb attack targeting the Ferguson police chief and other officials following the killing there last summer of a black 18-year-old by a white police officer.

Police officers who used a chokehold to restrain civilians received light penalties or none at all, according to a report released Monday by the Office of the Inspector General for the NYPD—a police watchdog under the Department of Investigation.