I'm surprised that it has taken this long for all of it. I remember reading the news several years ago about how some small drones got close to Merkel. My first worry was about assassinations. Quadcopters aren't expensive or even very difficult to make.
There are a range of options to defeat drones that include kinetic(birdshot and specialist shotgun rounds, netguns), non kinetic(electronic attack), as well as anti-drone drones(Anduril Industries). There have also been trials on using falconry to counter drones.
How do you even stop something like that?