I see LulzSec and Anonymous more as fighting the concept of the super states as we see them today rather than a specific government in general.
By attacking the US they are attacking the instance which is most familiar / easiest / offers biggest impact, but not necessarily claiming the agency they attack is the worst in the world, ever.
By attacking the US they are attacking the instance which is most familiar / easiest / offers biggest impact, but not necessarily claiming the agency they attack is the worst in the world, ever.