LOL, it's funny you wouldn't expect your premier protecting agency against domestic terrorism would not have informants in every major domestic terror group in the USA .. and am well aware of Trevor Aaronson's The Terror Factory .. https://www.brandeis.edu/investigate/government-corporate-wrong-doing/catching-or-creating-terrorists.html .. too. So yes, anything is possible in many cases, but in this case the evidence overwhelmingly points at Trump's incitement over a year, and to his enablers.