Man in the blue hat? Gregory Issacson, an alt-right Holocaust-denying troll w ties to Patriot Prayer & Identity Evropa.

Antifa didn't "find" him. He deliberately provoked all day. Rode his bike into the middle of black bloc protesters. Sprayed in face? Yes... with silly string pic.twitter.com/DmFsmkK5Dd

— Christopher Mathias (@letsgomathias) August 19, 2019