I can deny little of what you have said - but be careful when you refer to "early Christianity." The last Roman Emperor was deposed by a Germanic Tribe in AD 476. That's nearly 5 centuries after Christ. The "early church" was peaceloving. Christ's teaching are of "love your neighbor" and when you are attacked you are to "turn the other cheek." Even the Old Testament Commandments teach against taking the life of another. The dogmatic teaching that seemingly begin with the rise of the Holy Roman Empire have many differences with the actual "early Christians."
BTW, I am a Christian. But I have many issues with "the church."