Sentence:  Daniel raised an eyebrow. “Do you happen to have an expert handy on toxic pesticides in the food supply?” Jacob blew out his breath. “No, but — hold on, yes, I might.” He drew out his phone. “Let me text my favorite <WSD>social justice warrior</WSD>.” Jessica might not know much about arsenic and pesticides, but she would certainly know who would. 
Meaning of the word marked with <WSD> tags:  (dot=;) a social justice activist.