'It's okay to be white' refers to a movement started by 4chan meant to expose
sjw hypocrisy. The idea was to put up signs in public places which read 'it's okay to be white' in order to demonstrate some people would
interpret the signs as racist even though they truly aren't. Just as 4chan predicted, many people fell for it.
Reasonable person: 'It's okay to be white!'
SJW: 'No it's not, you
nazi!'