U.S. researchers deliberately left black men untreated for syphilis for forty years.

Evidence

Then there was the infamous Tuskegee experiment, in which hundreds of black men with syphilis in rural Alabama were intentionally left untreated to track the progress of the disease. The experiment ran from 1932 to 1972, continuing after syphilis was found to be treatable with penicillin in 1945. — Anna Merlan, Republic of Lies, 165

Categorization

• XREF: Tuskegee is the canonical evidence for the vault claim that black American distrust of government is a rational, historically-grounded response — directly supports the reader’s connection to conspiracy-belief mechanisms.
• QUESTION: How does the forty-year refusal to treat mesh with the claim that conspiracism among black communities reflects rational response rather than pathology?