Actually there were Quakers actively involved in the slave trade at one point, for what it's worth - which is very little.

Hoever the notion that persecution of a minority in a distant part of the world has something to do with "karma" because people with the same religion have been guilty of something in previous times is nothing to with with any notion of 'karma' that I have heard of. It is of course very much part of the antisemitic tradition...