For Muslims...Why Arent YOU standing up against Osama and Fiends?

I believe that 80-90% of the Muslim world are really agreeable & righteous. However why is it that you keep saying Islam is a "religion of peace" yet you are eerily silent whenever "Muslims" wreck trains, blow up cafes & hotels, do gruesome beheadings, launch rockets into suburbs, crash planes into skyscrs & other evil acts. I know that the USA, Israel & The West have committed their share of injustice & stupidity (some of us also disagree and protest against it), but while you go on condemning them, burning USA/Israel flags & shouting blasphemies like "God willing Israel will be destroyed!" I hear no condemnation from YOU (the people, not your governments) in fact I see rejoicing, whenever the innocent civilians who belong to the West & Israel are killed by "Muslims". And if you say Osama is a terrorist...why arent you denouncing him more loudly & actively working against him (is he not a greater insult to Islam than the poorly drawn Danish cartoons)?