Wikimedia Commons has media related to Internet activism.

Internet activism can include both

• Internet-based activism, which is activism that uses the Internet, but may be about any topic, including both computer-related topics and non-computer-related topics (such as voting rights, environmental activism, etc.); and
• Internet-related activism, which is activism that relates to the Internet, but may use other methods, including street protests, person-to-person meetings, lobbying, etc.