The Good Samaritan story teaches us that we are responsible before God to love everyone, without regard to race or nationality. Racism is a false belief that certain people, that is, people of my race or ethnic background, are my people while other people are not. Racism makes us disregard the rights, feelings and needs of people of other races. In fact, racism can make people of other races invisible. They are not noticed, cared about or considered.
Racism is a serious sin.
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.