I don't understand how the Muslim faith got a foothold in SK...
The government there actually BUILT a mosque as a gesture of goodwill way back when. In fact, one of the main streets there is named after Seoul's sister city, Teheran. Tehran-ro, in Gangnam-gu. You can look it up.
Free Democracies are "tolerant" of even death cults. However, sooner or later, that cancer proliferates.
I'd assume SK will be looking at a ban on ALL ME immigration from now on.
After 9/11, U.S. inexplicably STILL admits immigration from the Death Cult countries.