evidence: Don’t Blame Each Other for Anything. Just Ask: "Who Shook the Jar of Ants?" Red and black ants never fight until someone shakes the jar [...] "If you collect 100 black ants and 100 fire ants and put them in a glass jar, nothing will happen. But if you take the jar, shake it violently and leave it on the table, the ants will start killing each other.