An evidence collage is a collection of screenshots and text that is assembled into a shareable document and presented as evidence. No professional computer applications are required to make an evidence collage; they can be made with basic image editing applications. Evidence collages are timed with breaking news events, and are meant to influence both the general public and journalists and preempt authoritative reporting. Evidence collages are a call for civilian research, which itself can lead to the dissemination and propagation of unverified information.
By modeling evidence collages after infographics or official documents and by using graphic design to introduce associated keywords and URLs (links to sites with more disinformation), they direct viewers where to investigate and invite them to support the campaign’s sites, resources, hashtags, and communities. Often, evidence collages include both verified and unverified information. This can make them more difficult to debunk. A Casebook example that used evidence collages can be found in “Misidentification: Unite the Right Rally,” where participants interpreted these images as clues and used them to incorrectly identify the driver in a fatal attack. This misidentification led to targeted harassment.
Evidence collages are a Casebook value under the "Tactics" variable in the code book.