I went to look at comments to a rally announcement he posted in a chat on Jul 31 in search of hints about what happened at the rally and where Jason is now.

Here is the link: https://old.reddit.com/r/windsorontario/comments/1vbd88q/reclaim_our_future_rally_2pm_saturday_august_1st/

And apparently people were quite confrontational (and announcement was removed by mods eventually), some quotes:

Someone needs to show him how to prompt AI to format posts better. Maybe the LLM even knows what they're trying to achieve is suspect, so it half-assed it.

Guys, it's starting to sound like this isn't just an anti-data centre rally, which I could get behind, but a recruitment rally for unhinged sovereign citizen types.

It feels like it's bait & switch, instead of a genuine protest they want to recruit members for the cult.

So I guess it's possible there was some confrontation in RL as well, or maybe cops checked his booklets he planned to give out and found some "red flag" phrases, as it seems Canadian free speech restrictions are harsher than in US and closer to European ones.