The document discusses how open data can be used by activists to raise awareness of social issues and exert pressure for change. It argues that digital activists need tools to easily discover facts by composing and analyzing multiple open data sets. Specifically, they need tools that allow frictionless sharing of data, ability to mix different data sets, and location independence of where data is stored. It also argues that social activists need ways to effectively distribute knowledge to reach people and receive feedback to move them to action. Overall, the document advocates for open data and tools that lower the costs of participation, discovery, and sharing of data to spread common knowledge that can empower activists.