Would Christ approve of such an attitude? Rejoicing in the death of someone? While, yes, every man is appointed a day to die, does our Father take pleasure in the death of the wicked? Does He rejoice when His children kill each other? Is God's justice to be lowered to man's flawed idea of justice?
Mat 5:38 "You have heard that it was said, 'EYE FOR EYE, TOOTH FOR TOOTH.'
Mat 5:39 But I tell you not to resist a wicked man, but if any one strikes you on the right cheek, turn the other to him as well.
Mat 5:43 "You have heard that it was said, 'THOU SHALT LOVE THY NEIGHBOUR and hate thine enemy.'
Mat 5:44 But I command you all, love your enemies, and pray for your persecutors;
Mat 5:45 that so you may become true sons of your Father in Heaven; for He causes His sun to rise on the wicked as well as the good, and sends rain upon those who do right and those who do wrong.
Mat 5:46 For if you love only those who love you, what reward have you earned? Do not even the tax-gatherers do that?
Mat 5:47 And if you salute only your near relatives, what praise is due to you? Do not even the Gentiles do the same?
Mat 5:48 You however are to be complete in goodness, as your Heavenly Father is complete.
1Co 13:1 If I can speak with the tongues of men and of angels, but am destitute of Love, I have but become a loud-sounding trumpet or a clanging cymbal.
1Co 13:2 If I possess the gift of prophecy and am versed in all mysteries and all knowledge, and have such absolute faith that I can remove mountains, but am destitute of Love, I am nothing.
1Co 13:3 And if I distribute all my possessions to the poor, and give up my body to be burned, but am destitute of Love, it profits me nothing.
While I realize that this man did horrible things, and yes, he will have to answer to God for those things, I will not rejoice in the fact that he was murdered. I will not rejoice in his death.
Mat 5:7 Blessed are the merciful: for they shall obtain mercy.