"Josh Lipowsky, a senior research analyst with the Counter-Extremism Project, said the decentralized antifa movement poses a lesser threat than the better organized groups on the far right.

While far-left extremists boast groups such as the John Brown Gun Club, they don’t actively promote violent attacks, Lipowsky said. 

'On the far right, we do see more active networks calling for organized attacks on synagogues and other religious institutions, as well as individuals that are deemed the enemy of that ideology,' Lipowsky said."