Thank you for your comment.  Antifa (https://nycantifa.wordpress.com/) is not racist. But they are politically active and vocally anti our President and his supporters. They are in multiple countries. So yes, I mentioned them.  No different than I do with others, and on both sides of the aisle. 
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1) Live updates: Free-speech, Antifa protests converge in Portland, June 4, 2017
http://www.oregonlive.com/portland/index.ssf/2017/06/portland_free_speech_protests.html

2) Youtube re Antifa protesters and Pro-Trump 'Patriot Prayer' Rally in Seattle
Counter-protesters  [...] including antifa, Industrial Workers of the World (IWW), Veterans for Peace, Indivisible Seattle, Black Lives Matter, and the Freedom Socialist Party - AUGUST 14, 2017
https://www.youtube.com/watch?v=tbm5ZicCRhU

3) 'Antifa' Grows as Left-Wing Faction Set to, Literally, Fight the Far Right, August 17, 2017 
https://www.nytimes.com/2017/08/17/us/antifa-left-wing-faction-far-right.html