I intentionally alternated between left wing / right wing events. These things aren't limited to one side, and they're somewhat frequent, if a bit cyclical.
What if the organizers have drilled it into their heads that they won't use real spears? "WHY DID YOU HAVE REAL BULLETS?!?!?"
Also I feel compelled to point out that "lawful authority" does not imply "authority acting lawfully". The difference is painfully demonstrated by the existence of a thread discussing the use of respirators in response to government jackboots suppressing lawful first amendment activity. The obvious alternative is to let the protests happen, per our Constitution.