Ready, Set, Shop! It's Black Friday!

It is Black Friday, and the mad dash to find the best holiday deals has begun. Scenes of shoppers fighting their way into stores is playing out all across the country.

Crowds are lining up – not always politely – for clothes, electronics and more, with everyone looking to get a bang for their buck. That is of course if stores haven't already sold out of the hottest items already. CNN's Zain Asher reports.