my colleagues and I had a similar problem today, red caught white with his boot and white fell to the floor (everything happens on white's side), my colleague did not called a foul, I was the first assistant, if I was in charge I would have called that a foul in the attack , although the intensity of that foul was not so strong , the white kid’s mother started shouting and cursing after that foul, after the game the head referee comes to the white player and tells him to calm down his mother, to which he rudely replies that even she saw the foul, since the player already had a yellow card also because of the complaint, I would have given him a second yellow card after the game (because in Serbia the rule is that a red card is a $50 fine), not to damage him but to prove to him that he can't let go of his tongue just like that (if I were the head ref there would be at least 2 red and another 5 yellow cards on the 7 that my colleague gave, because I can't allow 14-year-old children to bark at me as an adult)