I think some people get a feeling of validation through their poor treatment of others, a momentary feeling of having the upper hand, of power. But it all fades away quite quickly and they're left the same disgusting shit weasel they always are...Behaviour like this becomes a cycle, they do it more and more to preserve their feelings of power and so they turn into a true, pure shit weasel.
Meerkats are awesome, shit weasels are not. Lol.