Should a Bible believing Christian be pleased at the death of Osama bin Laden?

I'm looking for a Biblical response to this question. And it's not specific to bin Laden but I'm just using him as an example. I know Jesus said [love your enemies](http://www.biblegateway.com/passage/?search=Matthew%205:43-48&version=NIV1984) . And [Paul even showed how this can be a form of revenge](http://www.biblegateway.com/passage/?search=Romans%2012:20&version=NIV1984) . But I can't help but wonder if a Christian could at least be relieved or rejoice that the Bin Ladens and Hitlers of the world were killed.