PC Benjamin Monk was sentenced after being convicted by a jury at Birmingham Crown Court last week.
Monk, of West Mercia Police, tasered Mr Atkinson for 33 seconds, more than six times longer than the normal cycle, before kicking him at least twice in the head during a confrontation in August 2016.
This was personal for that officer, as it is for every one like him, not in that he knew Mr. Atkinson, but that his racism superceeded any feeling of responsibility he had to follow the conduct regulations of his position.