Speak Truth To Power is a project of the Robert F. Kennedy Center for Justice and Human Rights that includes a curriculum of seventeen lessons. The lessons include ones on genocide and human trafficking.
They would have to be modified for English Language Learners, but they look useful. They include videos but, unfortunately, they’re all on YouTube, which make them inaccessible (online, at least) for most students. Of course, they can be downloaded and shown.
I’m adding them to The Best Resources For Learning About Human Trafficking Today and to The Best Resources For Learning About Genocide.