Frankly, I would flag basically anything by Glenn Greenwald. Even putting aside my personal feelings about him, it's basically guaranteed to result in a carbon copy of the same political flame wars we've all seen 1000 times. Sometimes the issue is just that people are bored of the same discussion over and over again.
The issue is that different community members have differing views about what's on topic here and/or what breaks the site guidelines. That's inevitable and natural.