Social justice warriors are best described as a bunch of "activists" who sit around all day and bitch and moan about how everyone and everything is "racist/sexist/homophobic/transphobic/whorephobic/fatphobic/arachnophobic/bigoted/oppressive". They consider everyone who disagrees even in the slightest to be a "white hetero-cis scum", even if the ones disagreeing with them are ethnic minorities, gays, bisexuals, etc. Pretty much 99% of the time, social justice warriors on Tumblr never get the fuck off their ass and actually do something, as they're too busy telling people to "check their privilege" while at the same time not noticing their own privilege as they're able to afford a computer or their own innate hypocrisy as they will inevitably rage against well-off white cisgendered people all the while having a significant amount of well-off white cisgendered people making up their numbers.