I was on this flight sitting in the first row behind first class. A few rows behind where this video was shot from. Will try to best provide context to what happened from what I have seen. Proof I was on flight: http://imgur.com/a/GyyGC. It took place in multiple parts of the plane so it is hard to have the complete picture.

The Argentinian lady and her two children were in the mid to back of the plane, she was somehow able to get her stroller on board and back to near her seat. Since I was near the front, I cannot know what happened. If she tried to put the stroller in the overhead bin or what. The flight attendant told her she could not have the stroller on the plane and he needs to take it. She refused to let him take it and was to the near point of shouting. The flight attendant shouted up for security very soon on, escalating the situation more (he should have been working on deescalating)

The flight attendant and the woman started making their way to the front of the plane (I forgot who had the stroller at this point). She had her two kids. She shouted something about being an Argentinian woman and yada yada.

It was this point where things escalated a bit more. The flight attendant and Argentinian woman were at the front of the plane in the crew area / next to the front door of the plane. She was hanging onto the stroller and refusing to let go. The flight attendant was trying to remove it from the plane. Both were at fault here in my opinion. The flight attendant's tone was overly aggressive. The woman was refusing to let it go and made an aggressive move grabbing the flight attendant (which she should not have done) This angered him and he responded by jerking the stroller harder knocking the Argentinian woman in the head and nearly missing her kids. The flight attendant should not have been so aggressive and should have been aware of the kids.

The video you see above, and I have a similar video (wish i recorded earlier in the situation), is the aftermath. A lot of people were upset in how he treated the woman, knocked her, and her having children around. The first class passenger as you saw went off on him and the flight attendant should have ignored him instead of getting hot headed and continue to escalate it.

In the end, the woman was removed from the plane. The flight attendant remained, served me my ginger ale. I was nice to him but you could tell he was worried for his job and could only respond with basic responses.

The woman well knows to not bring a stroller on a plane, she refused to let it go, she was shouting... so she is also at fault as well in my opinion. But don't get me wrong, flight attendant should be way more professional than he was.

I'm surprised the first class passenger was not kicked off for his aggressive threatening of a flight attendant, but yes... flight attendant was kinda mean and did a lot of things wrong. Let me know if you have any questions, will try to answer.

I'm currently on my next flight but have internet.

https://www.reddit.com/r/dallas/comments/66skqs/_/dgl79bp