Can you be Christian while wishing death upon another? As an American on 9/11 I wanted death to come to all who planned or contributed to the attacks. As a Christian, I felt conflicted. Should I be feeling this anger? Am I right in thinking that Osama bin Laden should be killed? As well as brought to justice. 

As a Christian should I have these views? Or should I leave it up to God to handle, to decide whether he should die or live?
First of all, this is definitely something that should be left to God. A great example is in Jude:


  Jude 1:9 (NLT)   
  
  9 But even Michael, one of the mightiest of the angels, did not dare accuse the devil of blasphemy, but simply said, “The Lord rebuke you!” (This took place when Michael was arguing with the devil about Moses’ body.)    


Satan is certainly the evilest being in existence, but even Michael left Satan's punishment up to God.

Also, consider these verses in Romans:


  Romans 12:19-20 (NLT)   
  
  &nbsp;19 Dear friends, never take revenge. Leave that to the righteous anger of God. For the Scriptures say,
  &nbsp;&nbsp;&nbsp;“I will take revenge;
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;I will pay them back,”
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;says the Lord.
  &nbsp;20 Instead,
  &nbsp;&nbsp;&nbsp;“If your enemies are hungry, feed them.
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;If they are thirsty, give them something to drink.
  &nbsp;&nbsp;&nbsp;In doing this, you will heap
  &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;burning coals of shame on their heads.”   


Again, leave it to God. He can do it way better than we can.

Also, instead of hating our enemies, we are called to love them instead.


  Matthew 5:44 (NLT)   
  
  44 But I say, love your enemies! Pray for those who persecute you!    


That being said...when the current event was Osama's death, a few of my Christian friends (and I) said that while they had not wished for Osama's death nor were they happy about the death itself, they were glad that Osama had been removed from his position at the head of Al Qaeda.