If a human being cannot be moved by the murder of children, what is going on inside that person's head? It has to be a very lonely sort of sickness, one that can't be shared with others because no one else can possibly comprehend it.
Typical KGB/FSB mindset. They have a long history of committing atrocities. Putin was with the KGB for 16 years before being placed head of the modern equivalent of the KGB, the FSB. He served in that position for a year.