The speed of the campaign's spread is explained by its infrastructure, not organic momentum. Indivisible's petition platform — built for constituent pressure on Congress — is the engine behind the 'Tell Congress to Say No' posts [3][5], which is why the phrase appears almost verbatim across accounts with no apparent coordination overhead. What looks like a viral moment is a distributed field campaign operating through social channels. That distinction matters for how Congress will receive it: a coordinated constituent drive lands differently than trending commentary, and Indivisible has a documented…