The article says nothing about who his comments were directed against.
You choose to believe they were directed at average citizens expressing dissent.
I choose to believe they were directed against the far more visible and effective groups of lawyers & 'civil rights' groups who seem to be opposing the war on terrorism out of spite. The same folks that have created an environment where a 86 year old WWII medal of honor recipient gets the same treatment at an airport as a suspected terrorist.
I doubt the AG is much concerned with honest libertarians.