Leaving aside the hilarious grammar, I’d read “Christian persecution” as Christians persecuting people, and we have overwhelming objective evidence for this.
His initial premise is nonsense of course, a cursory read of the dictionary definition, or indeed any definition, of atheism is sufficient to disavow oneself of that idiocy.
Even if his lie were true, and a significant amount of atheists worshipped Satan, and persecuted Christians, it would remain a false equivalence to assert this were atheism. Atheist and atheism are describing two different things.