Which social groups are particularly vulnerable and marginalized in different COVID-19 settings? What contributes to and compounds their vulnerability?

https://twitter.com/bateswalsall1/status/1264308701269233665?s=20

The twitter link above shows a video of a foodbank near where I live in London in a shopping centre in Elephant and Castle. This is a foodbank queue for the unemployed and those receiving benefits. This is not a queue for the homeless. It also shows close proximity and in some places the inability to distance and follow national guidance.