It looks bad on the video, but, that's because the mother behaves like something horrible happened.
I was on a cruise , eating an ice cream, leaning against the side wall.
A woman pushing one kid in a stroller came by with another kid tethered to her wrist with some leash device.
Without looking, she ran into me .
She quickly shouts ; " Will you watch where you're going."
I calmly replied ; " Lady, I'm literally standing against the wall. How could I run into you?"
She gave me a nasty look, mumbled something and moved on.
I softly chuckled and was grateful NOT to be her husband . 
Oh, I am not saying that every freaking parent is cool, they are asses too sometimes. I have two kids, so I know that it isn't easy.
BUT, flying a lot, and seeing how these airline employees have been arrogant and handling people (and I am saying maybe only 5% of them do this) is very irritating, and most people were just afraid to say anything because maybe they would force them to miss their flight, so not worth it. Now, different story. People for year are tired of this crap.
True story here - I fly a lot and rarely have problems, BUT when i flew with both of my kids, for some reason, they singled me out and tested me for bomb residue, but not once, but TWICE. In two areas. I am like, sir, they just tested me three minutes ago over there, and the asshole, in front of my kids, said "You giving me a hard time, you want to miss your flight, in a smirking voice". These 5% arrogant asses are on a high trip, remember that, so what you are seeing is years of anger finally coming out with people taping them and speaking out. There are following the rules, and then there are other ones who get off on putting you down. Does not matter what industry, you have these people, that either have to be stopped, or finally someone talks to them to make them understand that it is NOT ok to treat people like that.