You should speak up against bigotry.
Carla is riding the bus home and one man is picking on another.
Carla wants to find out what the trouble is.
Carla overhears that the man is picking on the other because of his skin color, so she steps between them.
Carla listens in to hear that the man is picking on the other because of his skin color, but she just sits quietly until her stop.
Carla feels right for stopping the man from picking on the other.
Carla feels regret about not standing up for the man and feels awful.