When your mum irons pants (trousers in Europe) for you.
Oh, I didn't do the ironing part of the laundry today, Dad. We've got free press.
To simplify things, a Social Justice Warrior, or SJW, are often thought to ruin everyone's fun and free speech. They force censorship, blame crap on gamers, and other things of this nature. The SJW anthem explains this.
P.S: They're known for getting triggered.
Casual guy: I don't think the mass-shooting simulator is bad-
social justice warrior: I'M TRIGGERED!!!!!!!!1!!!!!!11!one