We often think that technologies are merely neutral tools that help us accomplish our goals. Artificial intelligence continues this trend with its veneer of objectivity. But the way we design technologies can implicitly endorse some people’s moral priorities and undermine others’. And new technologies can interact with their social context in ways that are problematic, even exacerbating injustice. How can engineers and designers ensure that their creations become tools for good, rather than unwitting accomplices in harm?