What do I think?
I think that instead of posting this video on social media for the world to see, mom should have:
Mom needs take a few courses on child development or read a few books on the topic and learn how to engage with an angry human being, especially one who is young and is learning how to remain rational when angry.
Somewhere someone is thinking to themselves that this child is a spoiled entitled brat who wants to have her own way for having a temper tantrum. The child in the video is most likely a normal child who wants something that she cannot have, and denying the request for the gum, while explaining why she cannot have the gum and not giving in to the angry demands is part of the learning (discipline) process for young children. Children do not come into this world “knowing better”. Children come into this world knowing nothing more than how to eat. Babies can literally forget to breathe. Over the course of years and months they learn the skills needed to survive in this world, and that includes managing their own behaviors which is acquired through the practice and trial and error of co-regulating behaviors with an adult who has placed their ego aside and is not offended by the actions of someone who literally does not know better.