It begins.

A Black Friday Walmart shopper took exception to a child hiding under a shelf and startling passersby in a video uploaded to YouTube today.

The man could be seen kicking the furniture on the shelf and yelling, “Get out…I’ll kill you!” and kicking the shelf again.

When the woman filming told him to “calm down,” he looked at her and slapped the camera out of her hand.

It’s not clear when the incident took place.

Meanwhile, Black Friday pandemonium is already underway on Thanksgiving.

Video from a Valrico, Florida Walmart shows a throng of shoppers grabbing items but remaining civil…for now.

Developing…