In regards to the usage of the label social justice warrior
It is used as a short hand for people who have a particular culture, generally very well meaning, nice people, who fail to see how their solutions to perceived "problems" may themselves cause differing problems for people, and that other peoples heirarchy of priorities may not necessarily be in a similar order to their own.
Common but not necessary beliefs/traits of SJWS can include. Blaming the 'patriarchy' for all of the worlds ills. Belief in 'rape culture'. The redefining of words in such a way that the same behaviour turned in the other direction does not qualify "only white people can be racist because only they have systemic power" etc.
Individual social justice warriors may believe whatever they like, there are only trends and common themes, common themes and tactics that lead to a common label.
it's that the name you (collectively) chose sounds like it came out of a paranoid conspiracy.
The name fits the behaviour commonly seen. They are for what they perceive to be social justice. They go about it in a way that is potentially/often very hostile to others interests, and are quite devout in their beliefs. They fight for what they believe in, thus the "warriors".