Well scars are one of the risks of any type of surgery.
Looks like it wasn’t closed cleanly after the incision.
That’s nothing in my opinion… at least if it stays that size.
Depending on your genetic makeup this can happen:
It can happen in all races, not just blacks.
Avoid irritating it further, a small piece of self adhesive cloth sports tape cut in a .5 or so circle and kept on for a week or two will help support the healing tissues and protect it from further insults. Don’t use this with DMSO unless you clean off the residue adhesive first.
Get some DMSO and apply 2X a day to help the inflammation. Read up on it first; skin must be free of any toxins. Keep plastics and paint away from DMSO.