Probably, but I am not convinced it would work. According to their article their smallest drone category is the size of a small child.

That means the crazyflie (https://www.bitcraze.io/crazyflie-2/) is entirely outside of what they are considering. Which is too bad because it is pretty fast, computer controlled and absolutely tiny. Yes its take of weight is only 42 grams meaning you can pack about 15g of c4 on that thing and land it on somebodies head.

Now I am not sure 15g is enough to do any serious damage, and I don't know if you can alter it to use frequency-hopping jamming-prof radio but I do know this: technology only gets better, faster and smaller.

And it would really ruin my day if I was to hold a speech and 15g of c4 went of right over my head - especially since the attacker has a real chance of getting away with it.