I think you’ve read more into it than the Nazis have (as they are typically too dumb to read). Things are very black and white for these people. “Immigrants is bad. Springfield is immigrants. Springfield is bad.” That’s as far as the thinking goes. Then lazy Neo-Nazis that have nothing to do with the situation do whatever they can to “hurt” the “bad people” and a very easy way to do that is to call in bomb threats. And since they are not just stupid but also unoriginal and they already heard someone else called in a bomb threat…I guess that’s what we’re doing now…
It’s crazy how much more you can get done in one calm uninterrupted hour than in a whole very active afternoon.