Killing IS a vicious cycle

1 of the most recent daunting news was of the missing-killed china girl H.N in Singapore. Hearts of locals go out to her. The motives of the suspect was unfounded. Psycho? Rape&Murder? All answers hang in the air. This and those situation in Iraq, Indonesia, Thailand...etc Where terrorist, rioters, militants, gunmen(ain't they all the same?) kills @ pleasure, unreasonable and unlogically... to many. Why must they kill? Why do they have to saw off the victims alive? Could they not put themselves in the victims shoes? So even if their comrads were killed or died in some injustice way they feel, they CANNOT kill innocents!! What about the innocents families?? There will be no end to this vicious cycle.

I cant imagine what i would do or react if my close kins are to suffer a fate similar. I jus might go insane, metally 'inbalance', probia of having a child in future... I dont know! Who does??