Well I think to be fair-minded if "call to arms" is idiomatic, then you have to assume that "stand back, and stand by" is as well.
You can't arbitrarily take one literally and one not. If they both idiomatic, then they are both equally harmless.
You can't arbitrarily take one literally and one not. If they both idiomatic, then they are both equally harmless.
You are equating the Proud Boys with the amorphous "LGBTQ+ friends" community, and then saying that the latter "regularly riot". That's not tenable.
I think you are deliberately engaging in bad-faith arguments. You are literally saying "gay people are the same as organized armed militias." In fact, you said it's "worse."