@nursejekyll
Which religious groups in the UK believe that God speaks through clergymen as if they were mediums
What I'm trying to say is that some people take what clergymen say very seriously (as if it was God speaking and have difficulty making a distinction).
Another problem besides political influence is, imagine a white parishioner who's going through a rough patch and is looking for solace in religion. If he/she encountered a character like this clergyman spouting hate against 'the white', it wouldn't be unreasonable to think 'well, I'm not welcome here'. And that would push this person towards sects, cults or groups who are potentially dangerous. Or it could put them off religion altogether and they could start idolising instagrammers, tv personalities, or whoever - equally dangerous, IMO