The Illustrious Dylann Roof
...who exhibits a profound sense of social analysis with such statements as "You rape our women and you're taking over our country. You must go!" ...and upon committing a mass-murder of a group of Christians whose lifestyles are probably so conservative they'd never have sex outside of marriage and would share what they have with most anyone.
As for a segment of the American population---born and raised in this country---"taking over" what's also their own land, there's ALWAYS been "black subcultural" elements present in American life as far back as I can remember---even if the movie and television industry downplayed and disavowed it for the longest time, finally "recognizing" it from the late-1960s on.
I've never had a problem with "black subcultural" elements being integral to American culture as a whole.
What would the history of Rock and Roll be without the inclusion of doo-wop, Fats Domino, Chuck Berry, Etta James, Little Richard?
And the "Motown Sound" coexisting alongside the "British Invasion", The Beach Boys, The Four Seasons, The Righteous Brothers?
And ragtime? Dixieland? Jazz? What's "big band" without Louis Armstrong, Count Basie, Duke Ellington, Ella Fitzgerald?
And Billie Holiday? Nat "King" Cole? Miles Davis? Otis Redding? Jimi Hendrix? Aretha Franklin?
I hardly regard the "black subculture" as any kind of "domestic coup d'état".
Mr. Roof may make as many myopically absurd statements outrageous enough to send one's sensibilities "through the roof" as he wants
...but he now stands fit for little more than to "be strung-up from the railing of the nearest second-story balcony".