I found this guy on You Tube doing one of the karate katas that I still remember from my teenage years. I do this one at work when I get bored. I just close the door to my office.

I don't know why the guy in this video is wearing a white belt with black tips on it. Looks like his black belt faded. This guy is good. Maybe his school disposes of the colored belts and just uses white and black.