No it's a euphemism for a group of people who whine, bitch and moan because they think they're special snowflakes and would rather the world work on their idea of justice, or promotion. Instead of merit, and law. Note that the UVA scandal is an example of SJW's in action, so was the whining and moaning over Mozilla's president being fired for making donations on his own time to a group.
You can try and label it as the "scary conservative bogyman" but you're only proving one thing. That you actually have no substantial argument that people are right in calling them the bottom feeders of society.