Appeal to fear. It's the strongest emotion we have.

Americans fear EVERYTHING. They feared Russia during the cold war. Now fear China is going to take us over. Fear someone will break into their house so they stock up on guns and an alarm system. Fear a tornado will kill them so they get a tornado shelter and a safe room. They fear dying so they take multivitamins

Fox plays to this fear. Everything they air appeals to it. No surprise.