A baby started crying nearby, and Karen yelled at the parents, causing further disturbance. “Can you shut that baby up?” she bellowed. The parents looked mortified, trying to soothe their child. Karen’s ranting only made the baby cry louder. Other passengers showed their disapproval with glares, and one even murmured, “Unbelievable.” Karen ignored the tension, satisfied with her outburst. I could only sit there, vowing quietly that she would face consequences for her cruelty.