This meme is like saying some [insert minority here] committed crimes and therefor [insert minority here]s are criminals. Collective guilt is prejudice.
Except Christians are a majority, not a minority. Plus, several Christians have committed the "collective guilt" fallacy against Atheists, Muslims, Pagans, and Jews.
A, the good old two wrongs fallacy, and it doesn't matter if a minority or a majority, you are supporting the train of thought racists use to support their racism.
Except you calling me out as a non Christian for the guilt of others, thus using a second collective guilty fallacy and thus reinforcing the very behavior you denounce in others. Clearly you are just fine with collective guilt, as you keep using it against Christians, and use the two wrongs fallacy to cover up our own bad behavior.
I actually don't remember any Christians calling for that. I had hoped you'd call out this obviously delusional poster, not that may not be a few outliers I don't know about.