Because I don't want state-actors to have cover to start executing people. Glowies have access to fireworks, too, and can fire them off whenever they want to conceal bumping someone off who's ended up split off from the herd, which then enables a larger violent crackdown.
1. Observe that organizer has wound up alone, maybe via honeypot in a hotel room.
2. Spook overseer signals for fireworks.
3. Assassin uses suppressed .22 pistol to execute target.
4. Activate fire alarm and disappear during chaos.
5. OMG political violence! Theseprotestsmustbeendedbyanymeans.bmp.
6. "See, guns is bad. Must ban all."