As much as I'm tired of my Protestant friends claiming that the Catholic Church is a tool and focus of evil in the End Times, I am also tired of hearing that Catholics 'added' books to the Bible. FIRST came Christ who left his followers as the core of his new Church on earth. SECOND the followers (organized as the Catholic Church) much later combined the documents that passed careful review into the book we call the Bible. THIRD many, many decades later (a few centuries in fact) the people who founded the Protestant denominations took some books out of the Bible that they did not like. Thus they perverted scripture and attempted to usurp God's power.
Perhaps they should have removed more things they do not believe such as when Christ personally described the Eucharist in graphic detail, so graphic that many followers ran off in disgust or when Christ personally established the Church and its leadership on earth. Interestingly, Protestants are Bible literalists when it suits them.
The only one I am aware of who added any text sinfully to the Bible (perverting God's Holy scripture) would be Martin Luther who added "sola scriptura" (widely translated as 'by scripture alone'). Usurping God is the root of sin. [Of course, since the scriptures were compiled into the Bible years after Christ physically left earth, how could they have been the early Christians' (or our) only guide.]
Catholics could similarly trot around on social media labeling the 'late comer' Protestants as the false prophets that the Bible warns of, but we don't. A little decorum on the other side would be welcome and embraced.