Wikipedia:Articles for deletion/Death of Mark Duggan
states that "If the event is highly significant, and the individual's role within it is a large one, a separate article is generally appropriate.". In fact after reading this policy it seems to me this article is entirely appropriate given the '''huge''' magnitude of the event, and the apparently (at the moment) major role this person has played in said event. For example, Howard Brennan was not one of the central characters in that major event and is not notable for anything else, but he has a separate article and is cited in 
— User:C, 10:23, 9 August 2011 (UTC)
Stance: keep
Cited policy: WP:BLP1E (Wikipedia:Biographies of living persons)