SJW is an acronym that acts as a placeholder for
SOCIAL JUSTICE WARRIOR. It is primarily used to reference an individual or individuals that exhibit extreme or overly emotional behavior in an attempt to sway social, cultural, and/or political policy. It can also be in reference to that individual using
methodical and malicious tactics in order to silence or
defame those that disagree with their particular ideology. Commonly, someone who is labeled an SJW would also justify this behavior via a feeling that they themselves or the social group they identify with are being victimized by an oppressor.