Wouldn’t black spray paint be more effective... and I wouldn’t punch them... I would just take off their helmets and face masks. Then all the cameras can identify them. That’s more problematic for them than getting beat up.
☝️Modern Problems require Modern Solutions 😬
Kimber, jpx, and other primer propellant "shots" go behind shitty goggles. Lab grade gear still protects but your run of the mill bong and taco bell terrorist thinks a lab is only where meth is cooked on a hotplate.