Mercy, where? I'm a Catholic, and attend daily mass several days a week, and I don't see it. Where do you (plural) see it everyday? On the internet? Do you (plural) look for it everyday, or do you (plural) have a favorite site to go check each day? Why?
...a doctrine revealed by God and therefore to be believed firmly and constantly by all the faithful that the Blessed Virgin Mary, in the first instant of her conception, was, by a unique grace and privilege of Almighty God in view of the merits of Jesus Christ, the Saviour of the human race, preserved exempt from all stain of original sin. Ineffabilis Deus