Maybe it's something to do with who is in government? Brixton? Tottenham? Depressed areas with lots on benefits and just maybe they are fuelled by the fact that this government is clamping down on some claimants? I just have this feeling it's going to spread to other similar areas throughout the UK. I hope not though!
From wiki:
Tottenham is a multicultural hotspot with many different ethnic groups inhabiting the area. It is often referred to as a black area because it contains one of the largest and most significant populations of African-Caribbean people. These were among the earliest immigrant groups to settle in the area, starting the UK's Windrush era soon after West African communities - notably the many Ghanaians - begun to migrate into the area. Between 1980 and the present day there has been a slow immigration of Colombians, Albanian, Kurdish, Turkish-Cypriot, Turkish, Somalis, Irish, and Portuguese populations. South Tottenham is reported to be the most ethnically-diverse area in Europe, with up to 300 languages being spoken by its residents.
Tottenham has the highest unemployment rate in London and the 8th highest in the United Kingdom. It therefore has some of the highest poverty rates within the country.[10] There have also been major tensions between the African-Caribbean community and the police since (and before) the 1985 Broadwater Farm riot. Although Tottenham is a cultural center, it has also been one of the main hotspots for gangs and gun crime in the United Kingdom during the past three decades. This followed the rise of gangs and drug wars throughout the area, notably those involving the Tottenham Mandem gang and various gangs from Hackney and all of the areas surrounding Tottenham, and the emergence of an organised crime ring known as the Turkish Mafia was said to have controlled more than 90% of the UK's heroin market.