Lip service doesn't work. Prejudice is reduced when interracial contact is endorsed by authority. Grad students live solitary lives. Living arrangement is different from undergrads. There are no grad common areas.
Dialogue needs to happen.
Setting is important - there needs to be honesty, accessibility, not too staged. Grad student reluctance and apathy - hard to make community a priority for busy grad students. Underrepresented students have their own sub-communities. Sometimes it takes an event to bring students together. Easier to have casual contacts among undergrads but that process isn't initiated for grads.