In the past, I have expressed the opinion that just about the only really decent person in the whole Potterverse is Hermione Granger and I stand by that statement. Every single wizard was way too keen on having slaves.
I found this guy’s pronunciation a bit difficult to understand, but I got over it and the video was informative. I did not know that the argument “slaves are happy” was actually really used in the UK by anti-abolitionists since education about the minutiae of slavery is not really part of the curriculum in our schools.