Post the facts. How would it look in the middle of an argument if you make a claim, provide no sources, then ask your opponent to "Just Google it, bro!" I have seen a dozen plus posts on the forum today that have proven that he, and those he was parading with are confirmed Antifa members.
This profile reeks like a glowfag.
What led me to this conclusion, check this link that the mods posted on a sticky, how to identify FBI activists: https://cryptome.org/2012/07/gent-forum-spies.htm
Got any other clever ways to waste your time you'd like to share with us?