re: What has the NYPD discovered after removing the protesters

And that's why you keep a very safe distance between yourself and these people, even if you're packing. Most of these implements are very effective and devastating at close range in hand to hand combat. Know how to defend against them, and the #1 rule is distance. Ask Andy Ngo how it feels to be hospitalized multiple times just for being in proximity to masked anqueefers who've downed him with bicycle locks and "concrete milkshakes". It's

Guarantee they can swing a hidden hammer or knife much faster than you can draw, aim and depress the trigger. Even if you practice.

Plus, they know exactly where firearms are not allowed, and that's exactly where they'll strike. Situational awareness is everything. Use your eyes, ears and brain. Listen to what they tell you, and don't ignore your gut instinct because it exists for a reason.