It's called planking as in lying down flat like a plank of wood. Seriously as if young Australian kids know anything of what happened on slave ships hundreds of years ago and decided to make fun of it. I can't believe some dickhead black people think it has anything to do with racism. I...
That former KKK member is talking complete lying bullshit. Australia is the second least racist country in the world.
Here's the link to prove it
http://www.oecd.org/dataoecd/28/15/47570353.pdf