White boys imitating gang signs? One of the most humorous responses from a supremisist I ever heard was when he responded with "Yo. I'm down with western civilization all day."
Dude! You're speaking Afro/urban. Get woke!

Any symbol can be used to mean anything, whenever a group decides that that is what it means to them. So the article you cite is pretty much drivel, as it describes what the sign used to mean.....i believe that now it is drumpy's crowd's go-to, as yelling out "Pepe" wasn't working for them. Disgusting, but the apologists are wrong.

More white supremacist "fake misdirects" to cover overt racism.

This whole ''white power" thing is news to me. It always just meant "okay" to me.

It means A--hole in American sign language. I go with that interpretation.