My friend's brother was murdered - He has a small kid..I know how family reacts. Though in their country they have different laws but I still remember their words.."if they come out I will kill them like a dog and will put their flesh to eagles" (these were his brother's words).

If you have read the news the father of the girl in Delhi who was brutally raped by six asked court to hang the rapists in public.

I agree A killer doesn't think of being caught when he commits a crime! but this applies to those who emotionally lose their control and kill someone ,not for to those killers who plan for a while to kill someone.