I think just having a diverse course pack, which I am already planning on, will help. I don't want to stray too far into pure social justice, since I am an English teacher, not a Social Studies teacher. But I can assign them to read an article about privilege, or an article like the one Shari gave us about the pool incident--just something current so discrimination doesn't feel historical, and assign them a debate or an essay on the subject.
Those are my thoughts so far. Let me know if you have further ideas