"Amen I say unto you, Judge not, lest that you be judged. For the full measure that you mete out, shall be meted out to you... Thou hypocrite! First take the log out of thine own eye; and then shall you see clearly to cast out the speck from thy brother's eye." Matthew 7. 
I note the lack of snark in the Lord's exhortation to us. 
Clearly as adults we make judgments about behaviors to avoid. The justice system renders judgments every day. What Christ is commanding, in my humble opinion, is to avoid condemnation of others in the smug attitude that we poor sinners are somehow morally superior to others. We are not. In other words, I need to keep my side of the street clean and worry less about the other side.