Christians, if god is so almighty why does He allow so much evil in His Holy name?

God is not a puppeteer pulling our strings to behave or not in certain ways. Its the free will of the individual. He's not going to over ride our choices, that's how evil can happen in His name. People do it - not God. Ultimately tho, God uses for good that which man intended for evil. God's glory will be revealed in the worst of things. 9/11 is an example of that. God's grace and love and mercy and compion was seen throughout that situation despite men doing the evil in His name.