Mo Brooks is from Alabama, right next door to me here in Mississippi. As someone with a life-long experience with this sort of thing, I can tell you that he most likely really does believe it (and probably still does, even after his "evidence" was shown to be
completely untrue- The Daily Beast via MSN). The thinking goes something like this-
"Patriots," by definition, do not riot.
Antifa is
defined, simply and solely, as "people that riot."
Therefore, if there were riots, it was Antifa doing them; if any "patriots" were involved in any kind of disturbances, then the disturbances were not riots, they were protests.