Can someone kindly explain why there are Black Lives Matter protests in London?

Were the shootings not in the USA? Our pigs are mostly very nice and apart from special units do not even carry guns. Anyway who in England are saying BL's dont matter? I can honestly say I have never heard anyone say otherwise. Ive no doubt the cops in the US are dangerous and there are a minority who are murdering, violent scum but not sure why protest here. My one contraversial point here is that its probable the lives of the individuals killed recently, probably dont matter. They are, mostly, murdering dangerous criminals themselves.

Anyway I do believe there will be a race war in the US. Its a bubbling disaster over there Im afraid.