"A domestic Group" is pure presstitute propaganda to insinulate while male militias or something.
In reality, domestic could mean anyone, even islamonazis who live here.
Another example of fine journalism.../sarc
That's exactly what they mean. The liberal media want to kill two birds with one stone by 1.) equating militias with islamofascists and 2.)by being seen as victims, too. Because if they don't, people may wonder why only the Republican convention is in any danger of attack, or assault, and logically put two and two together.