Today the Church celebrates St. Athanasius, whose title in the Church is "Father of Orthodoxy" (tell me that isn't the best title of all time!). St. Athanasius was also the MVB of the Council of Nicea (Most Valuable Bishop).
The Council of Nicea was called to clear up doctrine on Church teaching. A guy named Arius was running around telling everyone Christ was only a human being and not the 2nd Person of the Trinity. The Aryans, though, weren't some schismatic group on the fringes...they held tremendous sway and The Aryans had enough influence to get Athanasius jailed FIVE different times. The Aryans also had a tremendous following just based on shear numbers as the controversy nearly saw the Church torn in two (it wouldn't have actually been torn in two, there would have been the real Church and a fraud, but you get the point).
It should because we see a similar phenomenon in our own Church today, although the new schismatics would never care to fight over something as blatantly dogmatic as the Divinity of Christ - they prefer to ambiguously muddy the waters about ALL teachings of the Church.
We need new St. Athanasiusses! We also need a deepening of the knowledge of the laity so that they can refute the modern day folks who would seek to tear off a huge chunk of the Church (some by "working within the Church")! We need priests as well who can teach and lead people to that level of deeper understanding. We need some more homilies on things that actually matter. St. Athanasius --- pray for us!