Atheists have a double standard. They want Christians, especially Catholics, to accept blame for and apologize for all the wrongs committed by Christians in the past, i.e. the Inquisition, burnings of witches, heretics and Protestants, the Crusades, the 30-years war in Germany, etc.
But atheists won't accept blame for and apologize for the horrors inflicted by their fellow atheists who led the French Revolution and the various Communist regimes.
So now, I'm giving atheists a chance to come clean.
Apologize for all the murders committed by atheists.
You owe a special apology to Catholics since you targeted Catholic priests and nuns above all others while you were in charge.