Amerika was a police state long before 9/11. Funny.
The Black Panthers were spied on by local police depts, but the FBI became famous for spying on Americans. Every big city police dept spies on Americans. Americans are forced to pay taxes to pay police to spy on them.
Since 9/11, the police believe they can easily ignore the 4th amendment (and they do). Any person can now be spied on AND many Americans will easily look the other way. The belief that police obtain court permission before spying on people is rediculous.
What's different today than before is the fact that many Americans will help police harass and spy on other Americans. I call those Americans 'Collaborators'.