I don't think that's the trick. I think the "trick" is to not look like your average European.
I can take you to a trailer park in my city where Euro-style males keep harems of underage skanks and scads of illegitimate offspring supported with EBT cards without a peep from the law. These guys are so white even I call them “crackers.” They don’t justify their perversion with contrived religions, or attract attention by dressing their concubines in out-of-date cult uniforms and building nutty compounds.