I understand now. You are asking why we do not have an emotional and visceral reaction to chillul shabbos like we do to murder. Perhaps not so much asking why, as bemoaning the fact that it is the case.
(As an aside, I have just as much understanding for the kids who hurt others as the ones who break shabbos. Kids who are unusually aggressive are probably being hurt by someone else. It is probably the easiest connection to make in the world of psychology.)