Obviously this is the action of a person who has a problem, none of us save perhaps a psychiatrist can have any idea of the thought process of others. It might be upbringing, treatment received in the past or some other cause which have left scars on the mind. This person may even have seen no harm who knows. How for instance does total insensitivity allow a so called normal person to carry out merciless act on another? I can never comprehend how anyone is able to deliberately lob a lump of concrete onto a motorway full of traffic, or throw half a brick into a crowd, a normal person cannot think that way, so yes there are some strange minds out their but perhaps we are not able to judge why.
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