It takes much more than just “looking up the history” on wikipedia to understand what happened at the early councils. You have to remember that those who were declared heretics have little to no evidence left so we can see their points of view. All we know is that a majority were against their teachings. How often has the majority been wrong in history or now? Just look at the cost that Galileo had to pay to demonstrate a scientific fact. Without his close friend, they would have executed him for saying the sun is center of solar system.
Please read the minority reports of all those who were summarily declared heretic before being quick to accept “the history”. Origen of Alexandria is the perfect example. He is a heretic, declared in 543 AD by the emperor himself. But he is also widely recognized as one of the most brilliant church fathers. Joan of Arc is another medieval example misuse of church power. It is easy to sit back today and search the web for answers, but very few seem to understand what was at stake. It wasn’t the Word of God that was at stake, it was God’s power on Earth that was at stake - who would wield it. Not even the savior of France would stand in its way.