Sorry I disappeared to put the bairns to bed and didn’t realise anyone would be interested.
Apparently it became popular during the civil rights movement in the 60s as a way of identifying themselves (or their children) as proud African Americans in the new world (ie one where racism wouldn’t exist) where they were treated as equals, not subhuman. The reason for it being an apostrophe is the lack of other diacritical marks in the US written language.
I like the idea behind it because it speaks of hope and a common goal.
So it really isn’t the same as some of the belters on here. ReignBeau??? What the fuck?