Racism has generally reared its ugly head following major civil rights advances in America. This happened after the post-civil war reconstruction period; after the Brown v Board of Education and the voter registration movements in the 1950s and 60s; and now after the election of blacks to high political offices throughout America.
The resurgence of the JBS is a recent manifestation of this typically American racist reactionary phenomenon. Hopefully, as in the past, the bigots will be beaten back and will slink back under their various rocks where they belong.