Not sure if you're trolling, but I'll try to answer with my current knowledge:
Minstrel shows/minstrelsy was developed in the 19th century U.S., where white people would dress up, put on black face, and depict black people in a derogatory view, with its most famous character being Jim Crow. This show would go on tour across the world (yes,
Japan was cited as one of the stops too).
Current talks on minstrelsy now is about art, and some black creators, like King Bach, feed into present day minstrel shows, that that's not to disclude other ethnic groups, for example Awkwafina, Ariana Grande, & Justin Trudeau who to my knowledge opened it further to include Indian people. To bring it back to art, they specifically show these unnamed mooks with exaggerated big lips, and a big and scary thuggish look. It'd be less of an issue if we saw them in other roles other than a prop to mascunilize MC-kun.
The latter part might be more misandry and nationalism, but I do still see the minstrelness in there.