She has a history of talking like that. Calling for the bombing of the New York Times, for killing liberals, using nuclear weapons to convert the Middle East to Christianity, etc.
She’s a monster, but people have pretended otherwise because admitting the Right is full of monsters was impolite. And now the monsters are in charge thanks in part to that head-in-the-sand attitude. People decided they’d literally rather die than say mean things about Republicans, and now they’ll get their wish.