And you should blame that (that nobody flagged them) on the double-standard most people have towards "not hurting innocent animals" vs "freedom to do any slaughter with the so-called 'pests'".
As I say I don't mind the killing of a healthy animal for meat, but the milk industry just sticks in my throat (especially when it is so easy (and tasty) to cut out milk these days)
(or was your comment a joke :p)
This discrepancy between how we pretend to protect animals but still do plain "pest control" is weird (this is a weak word), but this is a quirk of our "modern" society.
The law is made democratically, so that just means that a majority of the citizens think that it is not ok to hurt animals, but that it is ok to use mousetraps. Blame on the lack of awareness of the society.
But then, in turn, this means that not a lot of people flag the video, if the majority of them still think that pest control should be legal. If not, then now should be the right time to change the law of the country where you/me live.