I commend the leaders of this effort. They are standing up for human dignity and reminding us that we all contribute in ways we may not realize to the oppression of others.
Catholic teaching understands sin in two ways.
Another dimension of sin is the corporate dimension. Each member of the group has a responsibility to do something about the wrong, or is guilty of sinning by not confronting the evil. An example would be racial prejudice. If we are part of a group that considers others inferior because of their race, we have a responsibility to challenge that prejudice. Otherwise we share in the sin, even though we might not do something overtly prejudicial.