The Dissensus Index

Purpose

This document defines the methodology governing the Dissensus Index. It is versioned so that each iteration is permanently citable. When the methodology changes, the change is recorded in the version history at the end of this document. Researchers who cite the Index should note the methodology version in effect during their observation window.

Inclusion criteria

A controversy qualifies for the Index when it meets all of the following conditions:

• It involves a work of art, an artist, a cultural institution, or a cultural policy decision as a primary subject.
• It centers on a contested claim over a work of art or a cultural object or space, or over the conditions of its making and display: a claim to ownership or possession (including repatriation); to a space; that a work should be censored, removed, altered, or destroyed; that an exhibition or program should be changed; that funding should be granted or withdrawn; or about an object's status — whether it counts as art, belongs where it is, or merits protection. Theft is inherently a contested claim of ownership; intentional damage, a contested claim about an object's status. The claimant need not be identified.
• It has produced a traceable public record — news coverage, legal filings, institutional statements, or documented public response.
• The dispute extends beyond ordinary critical disagreement (a negative review, a contested prize) to involve institutional action, legal process, government intervention, or sustained organized response.

A controversy is distinct from ordinary criticism. A negative review is not a controversy. A museum removing a work in response to organized pressure is. A grant denied on aesthetic grounds is not. A grant denied in retaliation for political content, documented as such, is. When in doubt, the Index errs toward inclusion and notes the ambiguity.

How cases develop

Each case records its current status in plain language, drawn from its cited sources. When a controversy develops — a ruling, a reinstatement, a new dispute over the same object — the development is logged as a sub-entry under the original case (a case ACI-208, for example, gains sub-entries ACI-208-A, ACI-208-B, and so on), so the record of how a dispute unfolded is preserved rather than overwritten.

Source protocols

Cases are identified through the following sources, scanned on a daily basis:

• Trade press: Hyperallergic, The Art Newspaper, ARTnews, Artforum, Frieze, The Art Newspaper (UK and international editions), Art Review
• General press: The Guardian, The New York Times, Le Monde, El País, Der Spiegel, BBC Culture, and regional newspapers where relevant to specific cases
• Legal databases: Courthouse News Service, PACER (US federal courts), relevant national court databases
• Institutional sources: Museum press releases, government agency announcements, legislative records
• Regional trawl: A rotating set of non-anglophone sources covering Europe, Latin America, Asia, Africa, and Oceania, scanned weekly

All cases include at least one primary source link at the time of entry. The Index does not rely on secondary aggregation without independent verification.

Known limitations

The Index acknowledges the following structural limitations:

• Anglophone bias: Despite the multilingual trawl protocol, cases in English-language sources are more likely to be identified and more fully documented. Non-anglophone cases may be underrepresented, particularly in their early phases, before wider coverage.
• Social-media-visible disputes: The Index is better at tracking controversies with institutional footprints than those that live primarily on social media platforms without generating press coverage or formal response.
• Observation window: Systematic observation began April 12, 2025. Cases predating this window are included where they were still active at observation start, but the Index does not claim completeness for earlier periods. A small number of significant pre-window cases have been added retrospectively and are labeled as such.
• Single observer: The Index is currently maintained by one researcher. This limits the volume of cases that can be deeply documented and introduces the possibility of individual blind spots.

Data availability

The full dataset is available for download and citation at dissensusindex.com/data/cases.json. Each quarterly release will be archived with a DOI via Zenodo. See How to cite for citation formats.

Version history

• v1.1 (effective October 9, 2026): The five-stage classification was retired; case development is recorded through plain-language status and sub-entries. Inclusion criteria restated around the contested claim.
• v1.0 (effective June 21, 2026): Initial methodology, which classified each case in one of five stages (Watching, Escalating, In process, Active, Resolved).