The oppression food chain
Butt Monkey "A" is in such a nasty mood that he/she decides to go visit a world of hurt on the physically smaller or meeker or more socially vulnerable Butt Monkey "B". Butt Monkey "B", in turn, isn't about to take this injustice lying down, but there's no point in trying to strike back at the superior "alpha" figure. So Butt Monkey "B" seeks out the even smaller, even weaker, or even more vulnerable Butt Monkey "C" and gives him/her a hard time. Butt Monkey "C" then makes life hell for Butt Monkey "D", etc. This is basically Always a Bigger Fish, but depicted in reverse. If the cat and the mouse team up against the dog, that's We Are Struggling Together. Related to Animal Jingoism.
Jill surreptitiously tossed them peanuts despite "No Feeding" signs. She tossed one to a medium sized monk; before he could eat it a much larger male was on him and not only stole his peanut but gave him a beating, then left. The little fellow made no attempt to pursue his tormentor; be squatted at the scene of the crime, pounded his knucks against the concrete floor, and chattered his helpless rage. Mike watched it solemnly. Suddenly the mistreated monkey rushed to the side of the cage, picked a monkey still smaller, bowled it over and gave it a drubbing worse than the one he had suffered-after which he seemed quite relaxed.Live-Action TV