Photo credit: IR.com, wired.com
The washington post, citing the AP, reports that the anti-Islam filmmaker Mr. Nakoula was arrested after federal probation officers determined that he had violated the probation terms of his 2010 conviction (for unrelated charges) where he was sentenced to 21 months jail with probation. The terms of the probation did not allow for the use of the Internet without the permission of his probation officer.
Please note that Mr. Nakoula was not and could not be arrested because of the content of the film he produced. He is protected by the first amendment of United States constitution which guarantees freedom of expression, regardless how offensive or untrue the expressed views might be.
Moral of the story is that if you want to abuse your freedom of speech and cause the death of Americans, you had better not be violating your parol terms.
For those readers still questioning the concept of near absolute freedom of speech in the United States, feel free to check out a copy of Mein Kampf by Adolf Hitler on amazon.com for $13.09 (provided the censors in Iran allow you to access the site).