I never heard of this usage of "woke" until a few months ago when MTV put out a racist video, I think it was "What white people can do in 2017 to be less evil" or something like that and one of the racists in that video said, "Stop saying, 'woke,' white people."
And I'm like, "What?"
But after I started coming into greater contact with this new context, I have to say I agree with the MTV racists on this one thing.