I have heard more than one believer in Christ already in conflict of emotion over the death of Osama bin Laden. Should Christians rejoice? Part of you wants to be happy that justice has been served. The other part of you is sensitive over the eternal plight of the wicked. Be assured, dear believer, that one emotion does not have to be at the exclusion of the other:
(Psa 103:6) The Lord executes righteousness and justice for all who are oppressed.
(Eze 18:23) Do I have any pleasure at all that the wicked should die?” says the Lord GOD, “and not that he should turn from his ways and live?