Not only do London authorities find the explosion of rapes in their vibrant minority white city, puzzling, but then there is the issue of stabbings:
  http://www.breitbart.com/london/2018/03/17/air-ambulance-stabbings-shootings-road-accidents-sadiq-khan-london/ 
  https://www.standard.co.uk/news/london/londons-air-ambulance-called-to-more-stabbings-than-crashes-for-first-time-shocking-new-report-a3790691.html 

“London’s Air Ambulance had to attend more stabbings and shootings than road traffic accidents for the first time in its almost 30-year history in 2017. Newly released figures reveal that airborne trauma specialists and paramedics treated some 560 shooting and stabbing victims over the course of the year, compared to 533 cyclists, drivers, passengers, and pedestrians who had been involved in road traffic accidents, the Evening Standard reports. Dr. Gareth Grier, the Air Ambulance service’s lead clinician, said it is now “not unusual now for our teams to perform open-chest surgery for stab wounds twice in a single day,” adding: “This would have been unheard of a few years back.”

He tried to offer the public some reassurance by telling them his team’s “world-leading treatments mean that we can give these [stabbing and shooting victims] and other patients we treat the best possible chance of survival.” Even if there was an entire army of academics, armed with research grants, we would not get to the source of this mystery. It is like the old story (the streetlight effect) about a drunk looking for his keys/coins in a lighted area. The cop coming by asks: “Why are you looking here, did you lose them around here?”  The Drunk answers, “No, I did not lose them here, but at least there is light here.”
http://discovermagazine.com/2010/jul-aug/29-why-scientific-studies-often-wrong-streetlight-effect