To end discrimination in society is not the same as saying that one's error puts one outside the Church.
Will you and your fellow Protestants stop calling Catholics heretics and, for some, not even recognizing us as Christians?
I personally have not been calling Catholic heretics. Its not up to me to police the church. Like Paul I would rather know nothing between us but Jesus Christ and him crucified. So if you don't mention Purgatory, I won't mention predestination.