Bad Breaking of Bread

Whoever, therefore, eats the bread or drinks the cup of the Lord in an unworthy manner will be guilty concerning the body and blood of the Lord. Let a person examine himself, then, and so eat of the bread and drink of the cup. For anyone who eats and drinks without discerning the body eats and drinks judgment on himself. That is why many of you are weak and ill, and some have died. But if we judged ourselves truly, we would not be judged. But when we are judged by the Lord, we are disciplined so that we may not be condemned along with the world. So then, my brothers, when you come together to eat, wait for one another—if anyone is hungry, let him eat at home—so that when you come together it will not be for judgment. About the other things I will give directions when I come. (1 Corinthians 11:27-34 ESV)
The church at Corinth appears to have had some major issues, the most of which was selfishness. Even when it came to Communion, they forgot that they were "coming together" as the body of Christ. Breaking bread is a time to examine ourselves for what needs to change, and looking to one another to see what they need, not a time to focus on what I need and how others need to change.