Wrong again. My facts are facts. Your dislike for reality does not make facts become opinions.
Black Lives Matter is entirely about wanting black people to be able to murder police officers with impunity.
That's why Black Lives Matter tries to lynch police officers over justified self defense. They want them to be defenseless and easy to murder.
The reason why progressives try to violate people's civil liberties is because progressives enjoy violating people's civil liberties.
That's why no one can provide any alternative motivations for progressive efforts to outlaw pistol grips on semi-auto long guns.