who have no sense of altruism, or anything remotely resembling an understanding of what it's like to consider another person's point of view. Feeling compassion doesn't enter their heads, in fact they probably don't know what the word means.
These people live for themselves, and care little for much than gratifying their own desires. They move through life taking, but rarely giving, and the merest hint that they might put themselves out to help someone else, just for the sake of it, evokes the response "Why should I?" They are the people who sling food wrappers from speeding cars, break saplings in the streets, vandalise anything in sight, and vomit all over the pavement outside the local curry house on a Saturday night.
No doubt they were the people calling "Go on then, jump" as this boy contemplated suicide. I would like to think that they will be tormented by the thought that in the end he did jump, and that he died needlessly, but that won't happen - they'll probably sniggered to each other over a few pints afterwards.