A graduate who tweeted advice which can help rioters avoid being arrested is the son of two prominent Jewish socialists
Jacob Bard-Rosenberg is the son of David Rosenberg, one of the founding members of the Jewish Socialists' Group in the 1970s. Julia Bard joined the group in 1983 and the couple married two years later.
They are still active in the organisation, which supports campaigns including the Stop the War coalition and European Jews for a Just Peace, a group which recently attempted to send a flotilla to Gaza.
Mr Bard-Rosenberg, who has a twin brother, has been outspoken about his left-wing views in the past. As rioting broke out in Tottenham, and then elsewhere, the former Cambridge University student, who is now based in London, discussed on Twitter ways rioters may be able to avoid arrest.
He wrote: "For anyone heading to places where riots are: 1) Mask up. Properly, not just a hood. 2) Bindmans solicitors if you get nicked." He also posted the solicitors' telephone number.