There can be no justification for racism. The Bible teaches us that God made all men and women in His image and likeness. To reject a person because of his or her race is to reject God Himself in Whose image that person is made. I do not believe that most people want to be racist or prejudiced. However, all people, including Catholics, who want to follow Christ's command to love their neighbor may still need to be purified of racism.
People can be blind to their own racism.
This may be an error. It is important to examine honestly our personal actions and attitudes toward people of other races and to likewise scrutinize our parishes and Catholic institutions to see if racism is present. For until we honestly confront racism within our hearts, we cannot begin to correct ourselves. Racism has many disguises. It can manifest itself in a desire to be apart from people of other races.