This is an interesting observation
The analysis by religion is interesting. The Anglican Church is however a very broad church, with the very High elements like Theresa May, most definitely the Tory party at prayer. There are quite a number of low church parishes which won't be all that much different from non-conformist churches, so probably centre/liberal/moderately left, and then the evangelical/ fundamentalist wing. These tend to be very conservative in outlook and I would expect those being concerned about their African brothers and sisters to belong to this wing. I may be wrong - it's just observing the religious scene locally.
I don't know if any of you saw this from earlier this week:
Ryan Struyk @ ryanstruyk
This is a genius piece from @RonBrownstein. The Trump/GOP base isn't whites. It's white evangelicals.
amp.cnn.com/cnn/2018/12/11/politics/the-foundation-of-trumps-coalition-is-cracking/index.html?__twitter_impression=true
The foundation of Trump's coalition is cracking
In the UK, the 2015 Ukip vote split at the 2017 GE - with Northern working class types turning back to Labour. If you look at history, the Chartist movement of the 1830s / 1840s isn't dissimilar
Chartism was a working-class movement for political reform in Britain that existed from 1838 to 1857. It took its name from the People's Charter of 1838 and was a national protest movement, with particular strongholds of support in Northern England, the East Midlands, the Staffordshire Potteries, the Black Country, and the South Wales Valleys. Support for the movement was at its highest in 1839, 1842, and 1848, when petitions signed by millions of working people were presented to the House of Commons.
The People's Charter called for six reforms to make the political system more democratic:
1. A vote for every man twenty-one years of age, of sound mind, and not undergoing punishment for a crime.
2. The secret ballot to protect the elector in the exercise of his vote.
3. No property qualification for Members of Parliament in order to allow the constituencies to return the man of their choice.
4. Payment of Members, enabling tradesmen, working men, or other persons of modest means to leave or interrupt their livelihood to attend to the interests of the nation.
5. Equal constituencies, securing the same amount of representation for the same number of electors, instead of allowing less populous constituencies to have as much or more weight than larger ones.
6. Annual Parliamentary elections, thus presenting the most effectual check to bribery and intimidation, since no purse could buy a constituency under a system of universal manhood suffrage in each twelve-month period.
Chartists saw themselves fighting against political corruption and for democracy in an industrial society, but attracted support beyond the radical political groups for economic reasons, such as opposing wage cuts and unemployment.
There are also strong traditions of religious non conformity in the same areas and the same population too.
I don't think the dynamics are hugely different tbh - either with the past or modern day US.