I had an U14s boys game the other week. Yellows vs blues and the yellows were losing 2-0 with about 15mins to go. The captain of the yellow team was getting very fustrated with the spectators as a whole(home and away) which led to(during play) him shouting "parents shut up!". I was questioning myself afterwards as to whether a card should have been brandished or not because it's not very offensive or is it?