Firstly, I am not sure why he starts with Obama's Nobel speech. It seems quite clear to me that Obama is talking about Just War theory and not internal affairs.
Secondly, I do not think anecdotal evidence is going to cut it when proving whether the US is a police state or not. By his very definition of 'police state'
every country on this planet might well be one, since police brutality is, unfortunately, quite universal.
The author states:
A police state only succeeds by controlling the minds of the people, and in order to do that they must criminalize thought. I believe America has begun to do just that. It was never debated in congress. The bill was never signed into law. The public was never informed. But I believe the institution of thought crime exists like a cage in the mind of most Americans.
What does that mean exactly? He basically admits himself that thought crime does not formally exist in the US, but nevertheless claims it exists as some kind of institution in our mind? Could he possibly be any more vague? What does that mean exactly? It seems that he thinks because most people do not want to believe what he believes that they have an invisible cage in their mind? That yes, or they simply disagree with him :exhausted.
He subsequently goes on to talk about cases of police brutality, which do not really address the point. The essence of 1984 is not police brutality, it is about totalitarian government. Totalitarianism is where the government has control over information and plays a dominant role in people's personal life. You can say many things about the US, but information the US government has very very little control over at all. Again, the author admits as much.
He talks about thought crimes a lot, but he does not show how they exist in the US. To be frank, I don't think there are many countries on this planet where one is legally as free to speak ones mind as in the US or where the government has so little say on private matters. That said, I think that police culture is too aggressive in the US. Some more accountability there would certainly be a good idea.