After Bin Laden 's death reaction.

Few days ago USA President informed world about killing Osama Bin Laden. Everyone knows what is he responsible for and no one knows what more he did. I write this note from because I was a little bit confused about reaction of people. Maybe I am weird and don't feel the same what victim's families do (that's for sure) but I don't know if it's totally normal to jump around and scream "hurray Bin Laden is death, we've killed Osama". I am wondering if this is because Americans feels so united with nation and other or they are a bit lost. I just don't know how one can be so happy from someone death. On contrary I need to confess that almost every time when I was watching movies or reading about 2nd World War I was thinking like "daamn, they were so close to kill Hitler". Even though I don't think this is the same. No judging.