Some comments...
First, I see people on this thread saying a warrant wasn't shown. Each of the news articles I've read references a warrant. Why do you think a warrant wasn't shown?
Second, this wasn't just a "meeting". If you want to believe these wackos and what they say, this was the monthly convening of their government. They weren't just talking about things, they were for all intents and purposes acting as their own government within the borders of our country.
Just let a group of Muslims get together, declare that they refuse to accept a particular state (or city or county) as a legal government, have them form their own government, and then have those same Muslims send out "official" government documents to people requiring them to show up to their "court".
Can any of you that have been so vocal on this thread honestly say that you wouldn't be up in arms about this group of Muslims and calling for the military to take them out?