Predictably, when someone talks about anti-Americanism the far left will begin distorting it to sound like that if you criticize your country then you are "UnAmerican".  Pretty soon, the original point is turned into a charactiture of itself and the original author's points are ridiculed into oblivion.

Criticizing the policies of your country does not make you unpatriotic. Not agreeing with the US President doesn't make you anti-American.  The intellectually lazy may find it appealing to hide their anti-Americanism behind principled disagreement on policy. But most people with common sense understand there is a difference between disagreeing with US policy on some issue and being anti-American.

So here's a quick guide:

You might be anti-American IF:

1. You think the average American is "stupid" or "a sheep" or "brain washed".
2. You prefer law be made by appointed judges rather than elected officials.
3. You think of the United States, as a whole, to be "the greatest threat to world peace".
4. You think American culture is a grotesque cancer spreading across the world.
5. You think that the United States is the greatest threat to the environment.
6. You think that the United States kind of "had it coming" on 9/11 because of years of its "foreign policy"
7. You hope that the United States "loses" in Iraq.
8. You would like to see China or Russia or the European Union act as a "counter balance" to the US militarily
9. You consider Bush, Clinton, or any other US President a "War criminal"
10. You believe that US-style capitalism is a force for global ruin, individual degradation, or environmental catastrophe

You'll note that none of these 10 items involves criticizing a US policy. Or voting for a particular presidential candidate. Or even what kind of car you drive.

Someone who is anti-American is probably not as likely to buy an American made car as someone else.  But not owning an American made car doesn't make you anti-American (I realize this should be obvious but based on some of the things I've read in response to my article this basic bit of logic seems to elude some people).  Driving to some anti-Bush protest in your Volvo with your "No blood for oil" sign may be SYMPTOMS of being Anti-American but these things in themselves do not make someone anti-American.

You'll also note that there is a difference between being anti-American and Un-American.  Thinking that the US deserves to be attacked by terrorists is different than being in favor of say laws that censor critics of the government.  The former would be a symptom of anti-Americanism and the latter would be a symptom of being un-American in my opinion.

That's my 2 cents on it anyway.