With the help of @LeonLush, I bring you this garbage creature attempting to pass as a human. Why did this creature act out in this instance? Because they are offended by the shape of the person sitting beside them. Leaving the body acceptance vs. medical/travel needs discussion aside, to spit on someone, belittle them and assault them for existing is deplorable. I keep thinking John Quiñones is going to walk out and say "What Would You Do?"
Well John I would get between the 2 around the time the aggressor was leaning into the other persons space. Given my years of NVCI training and experience, I would also try to de-escalate the atmosphere via body language, tone and once "Hands-On" action is necessary, I would move to restrain her** until a security guard or officer was able to take over.
It's bizarre seeing someone act this terribly, trying to cause as much harm physically and emotionally to this around her. Truly a victim of Brain Worms
** This is not a How To guide for physical holds, if you want to learn proper form/technique for safe descalation techniques check out -- The Crisis Prevention Insitute Channel for hundreds of informative videos