The thing started in the “cultural/ethnic diversity” part of London and the major rioters in the beginning with Jamaican/others of “diverse ethnicity” aka not British isles ancestry. Photos of the first night at least show all black rioters. Apparently other thugs have joined in but since press are beaten trying to take photos, helicopter photos are standard lately, and they don’t show race easily.
I am sure the media in Britain does not want people in general to know the racial makeup of rioters. Unless it’s mostly white people.
On the contrary, the British media have made no bones about the fact that this began in a black Afro-Caribbean (mostly Jamaican) neighbourhood, where the 'gangsta' culture is rife.