Chief McGrath disputed claims by neighbours that police did not fully investigate reports of suspicious activity at 2207 Seymour Avenue, which is in a working-class, mostly Puerto Rican district.

BBC: Ohio women were held with ropes and chains, police say

In keeping with previous work, they found that high- and low-rank individuals showed different levels of responsiveness to a class of hormones called glucocorticoids, which regulate immune-system activity and response to stress.

ECONOMIST: Social status and health

Mr Denham has also recently launched a plan to identify tensions in predominantly white working class areas, amid evidence of a significant rise in far-right activity over the summer.

BBC: Councils warned of far-right risk