Following peace demonstrations in Trafalgar Square, riots broke out in Whitehall and The Mall when members of the crowd tried to break through police cordon to Downing Street. Mounted and feet police charged the crowds repeatedly. Photo shows: A policeman struggling with an arrested rioter in Whitehall as a girl attempt rescue. Two mounted officers are joining in, and the one on the left has the struggling man by the collar. 18 September 1938