"Millions"? Bullpuckey. But the Protestant side has never hesitated to warp history to "prove" their point. Especially the English Protestant side, which, after brutally suppressing any shred of Catholic dissent (Pilgrimage of Grace, anyone) proceeded to rewrite history out of whole cloth.
Over the years I have varying estimates, but I believe the number is well into the millions. For the sake of argument, however, let’s stipulate long dead historians grossly overstated the numbers. Let’s say the real number was 100,000, would that change a thing? Would that change the reality of what happened? Would that demonstrate what Rome did was right? NO and NO
The truth is this: The blood of countless Christian saints is on Rome’s hands and the Lord remembers each one by name.