"crime is crime is crime"
No, if that were the case there would be the same punishment for all crime. As it is it varies from life imprisonment to being let off with a caution.
Also that which is not a crime today may be a crime tomorrow if laws are tightened and similarly that which is a crime today may not be a crime tomorrow if laws are relaxed.
And without condoning it, how does breaking a window compare to sending troops into a sovereign nation and killing (albeit by collateral damage) innocent human beings within that nation?