AntiAmericanism can be found around the world. The French put several books on the bestsellers list that told how there was no plane involved in the attack on the Pentagon.
Michael Moore has made a lucrative career selling antiAmericanism abroad. Just take a look at the foreign Amazon.com sites (amazon.co.uk, amazon.fr, etc.) to see how his work is packaged overseas. There's always a "patriotic" Red White and Blue on the cover to let people know that America's critic is trashing his homeland again. Michael Moore even entertained notions that 9.11 was an inside hit job and asked for people to send him emails telling what they knew.
Treason and sedition are subjects that people are not comfortable talking about seriously. Then again, I am uncomfortable when I see anarachists advocating the overthrow of the U.S. form of government (as described in the Constitution) and then using the Constitution to claim "free speech". Socialist-anarchists do not want a government composed of 3 branches. They are antigovernment.
People of other nations have spoken out against the American government. People of other nations cheered the 9.11.2001 attacks. I have heard no ad campaigns denouncing the Islamofascists who attacked on 9.11 and who kidnap, murder, and create terror around the world. They may be a splinter faction from "peaceful" muslism but then again I hear no outrage that their religion has been hijacked. Only antiAmerican statements that Americans shouldn't be haters, shouldn't discriminate, shouldn't assume that everyone feels this way...