This "lady" in the yellow shirt sucker-punches an old woman at the Hollywood, CA. Ross store.

The woman in the yellow shirt was talking on her cell phone very loud and swearing, when the older woman asked her to please not use that language in a public place and there were children present. That's when the woman in the yellow shirt became agitated, said a few choice words directly at the old woman, then punched her.

Here's another video of the entire episode....leading up to the punch: