The London riots are a great way to understand the Brahmins, Dalits and Helot alliance.
More or less, the alliance works with the elites (Brahmins) importing an underclass. Violence by the underclass can then be used to force the elite’s policies on the country. The elites don’t like austerity, for example, and they us the Dalits and Helots to ensure that there isn’t any austerity. After all, if there is austerity, there will be riots. What do you expect?