When you're done again, re read the ruling and then read the dissents. Then take a peak at the 24 states who have enacted legislation banning virtual kiddie porn. This ruling makes those laws unconstitutional in point of fact.
When you're done with all of that try to convince yourself that freedom and liberty come from an omnipotent central government ruling that a pedophiles right to virtual child pornography is protected somewhere in the first amendment. An amendment crafted by the same men who crafted and lived with obsecnity laws in their states.