You'd like to think millions of people "praying" in protest to satan would make Christians ask, "Hey wait, are we violating our own Golden Rule by imposing this by force on everyone else???"
But that'd be more likely to send most of them into a spiral of "Ohmygawwwd, it's the apocalypse, the Latter Days, the End Times are upon us, see, proof!"
Not many of them ever have the honesty to ask if a god would prefer non-hypocrisy to all their pious praying on street corners instead :::-/