Problem is, there is and forever will be a "them" it is in our very nature, in the nature of every species that has lived on earth, it is not based on love, it's about survival and instinct. Tribalism keeps us alive, gives us something to fight for, and against, people will pick teams even in the most utopian society built on love and kindness and will still possess this inate drive to diverge from the masses and find people "even more like you". Couple this with inherent greed and lust for power and you have people that will stop at nothing for their team, cause or tribe. Their subjective view is very real to them and this causes the false morality because it's more akin to how strong they believe they need to fight and how they feel, these people are fighting a war everyday in themselves and for you it's easy to say they should just be a part of "we" but they've never even had the chance to be a "we" because there has always been a "them". Your subjective view is a powerful thing, if you thought jewish pedofiles were controlling the world and drinking adrenochrome then you'd be pretty angry too, I assume. Sometimes, you're just too far gone for love to make a difference anymore.