Oh, I think they recognized the symbol. Extremist conservative Christians often claim that Islam is Satanic. The hamza hand isn’t directly an Islamic religious symbol; it predates the founding of Islam by almost 1,000 years, which explains why it’s seen in other, non-Muslim populations in the Levant and the Maghreb. But the hamza is sometimes taken to be an Islamic religious symbol, even among some Muslims. I think that’s where the Satanism claims are coming from. Conservative Christians are deeply and unapologetically Islamophobic, often arguing that Islam isn’t even a “real” religion deserving of First Amendment protections.