Over the past several days, I've been responding to Cameron Bertuzzi's recent videos about issues related to the New Testament canon. I responded to him on Facebook and on Triablogue here and here. These issues come up frequently, not just in the context of Roman Catholicism, but also in other contexts, like Bart Ehrman's recent comments in response to Wes Huff. But few people are well prepared to address these topics. That needs to change.
A good place for starting to prepare yourself for future discussions is an article I wrote in 2009 about the evidence for the acceptance of our 27-book New Testament canon before the time of Athanasius' Festal Letter 39 in 367. Read Athanasius' letter. Read the other sources involved, especially Origen's seventh homily on Joshua. Think through the issues. Prepare yourself for future discussions, and speak up. If you don't like how these things have been handled so far, and you shouldn't like it, one thing to do is to make better use of your own responsibilities and opportunities.