Original definition; A person who is actually a bully that hides behind social justice to attack people. In recent years the term has come to mean anyone who;
1. Acknowledges that there is a rape culture
2. Doesn't believe that transgender people are mentally ill
3. Recognizes that white privilege exists
4. Admits that feminism is beneficial to society
In other words, the term has lost all meaning.
If telling someone that they shouldn't use autistic as an insult makes me a social justice warrior, I'll gladly own that label.