Moped driver arrested after knocking Boston officer to ground, fleeing scene

A 22-year-old has been arrested two days after he allegedly struck a Boston police officer with his moped and drove away, police announced Saturday. Angel Gonzalez, of Dorchester, is facing charges of assault and battery with a dangerous weapon, failure to stop for police, and leaving the scene of personal injury. According to the Boston Police Department, the incident began unfolding Wednesday…