I get it now, thanks for the explanations.
I watched the video and, not having somebody besides him to compare with, how could anybody know how tall the guy is? Furthermore, in Spain, to become a policeman you have to be taller than a certain height, so from that point, any policeman should not qualify as a "sawed off little runt" I guess.
Security guards, as in shopping malls etc, used to have to be taller than a certain height too. Due to shortage of candidates, and to the fact that they don't want/need/are allowed to confront anybody but just call police in case of trouble, you find many times guards in uniform that can't even scare my little kids.