1. Quoting the Founding Fathers, Jeff Cooper, or Mr. Rogers means nothing. "Appeal to Authority" it's called, i.e. so-and-so said it, so it must be right.
2. There's an awful lot of time spent on this board discussing something called "situational awareness" and an even greater amount of time spent heaping scorn upon 'the sheeple" for leading their lives in condition white and being compliant victims. No matter how much chest-thumping you do, and how many way-cool manly soundbites you compose, being out on the street with an AK in 21st century USA is out of the ordinary. Expect attention in most places. Somebody noticing an assclown on parade with his AK is practicing situational awareness, and by calling the publicly-funded police is doing something towards not being a victim.
What this really comes down to is an enjoyment, on some level, of feeling like The Persecuted Members Of The Resistance. The assclown gets to be today's posterboy, however ill-chosen he may be, because he got smacked down for acting like an assclown with a gun without quite breaking any laws.