This woman is the personification of the term "Hangry." (hungry + angry)
When workers at a McDonald's were taking too long with her McChicken sandwich she decided that a more hands-on approach – pun intended – was needed.
As you can see, the customer jumped over the counter, kicked the reported manager, before ending up in a head/hair lock.
There's no word if the skirmish led to the woman receiving her McChicken. The police are looking for the woman in the video.