You have it somewhat backwards.
The leftardic news media *is* SJW. All leftardism is SJW at this time. SJWism is just an outgrowth of PCism. It is not possible, at this time, to be leftardic and not be both PCist and SJWist.
One thing that often causes confusion in trying to figure the root source of lefardism is that there’s no longer any source root to lefardism.
See: Blair’s Law.
http://www.urbandictionary.com/define.php?term=Blair%27s%20Law
Coined by Australian journalist, Tim Blair as “the ongoing process by which the world’s multiple idiocies are becoming one giant, useless force.”
1. The alliance between the radical Left and extremist Islamists is an example of Blair’s Law.
2. The fact that white supremicists like David Duke supported ‘Mother’ Sheehan’s sit-in at Crawford, TX is an example of Blair’s law.
Modern leftardism has within it parts and pieces of every evil filthosophy to come dribbling out of intellectualists of the late 19th through the 20th century.
PCism is just the toolset used to identify and neutralize anyone psychologically capable of resisting. SJWs are what you get when the resistance is sufficiently eliminated.
Okay, we can agree to disagree then.