It would serve race mongers well to consider that even a docile old dog will bite you if you mistreat it often enough and long enough. Tangential to same is the reality of the “laws of unintended consequences.”
http://mychal-massie.com/premium/the-laws-of-unintended-consequences/
http://mychal-massie.com/premium/the-laws-of-unintended-consequences/