The colloquial meaning you refer to is stupid. It's mostly used as a slur on the internet.

"sjw" is a slur. The term "social justice" is used by literally everyone, most notably the members themselves:

http://www.blackpast.org/perspectives/black-lives-matter-gro...

http://www.sjti.org/

http://www.socialjusticetoolbox.com/

^ from just the first page of a google search.

So you are insisting that when the links you link speak of social justice they speak of the very recent movement that is rooted in the works of critical theory?

I doubt it.

(one of them compares a modern movement to the civil rights movement...)

I'm talking about the online sub-culture that has sprung up in the last 5 years. The ideas they promote are a distillation of various crit theory stuff, like safe spaces, trigger warnings, micro-aggressions, etc. They are the reason why the term "white privilege" is now virtually a household term even though it's been around since the 1980's. Not sure what your purpose is in arguing this very simple definition, but if you don't agree then have a good day I guess, not worth any more of my time.