Somewhere I read recently that the reason it's always controversial how many people show up to a demonstration in DC is because of the flight restrictions preventing aircraft from being overhead.
So some people want a big number and others want a small one, and either way it's hard to prove. I'd assume drones are a way around that.
So some people want a big number and others want a small one, and either way it's hard to prove. I'd assume drones are a way around that.