This kind of thing just pisses me off. It's not just about 'institutional'or 'systemic' racism, it's about the mental laziness and cowardice of the people concerned. About that cops' unwillingness or inability to think for himself and the lack of inclination to properly investigate the crime that had taken place.
You can understand why my opinion of people is not overly high, right?
As to time, well, as you probably know, the first King of England (or King of the English) was Aethelstan, who in 927 CE received the submission of the Northern Kings to become overlord of the Saxon and Viking kingdoms of England. This is held to be the beginning of England as a nation, and although we've been under foreign occupation since 1066 CE, the history is continuous. From that perspective, of course, a hundred years is not very long at all! Especially to an old codger like me!