To paraphrase Kabbalah, everyone is constantly in one of three states: either naively loving (basically like a dog, as there is an instinct to love and hence a desire for it, one sees no evil, hears no evil) the other, is likewise, naively hating (basically like a bitter person, upset that they were unjustifiably insulted, hence angry; but as we have but one heart, hence now instead of naively loving (which feels good) we hate, but hating feels bad (for unity feels good and separation bad) now once we feel bad, we become jealous of people, of people who feel good, hence bullying, antisemitism, terrorism etc.) or to live in truth (well figure it out!)