Everyone seems to be forgetting that the US did have a pitchfork event, it was called Jan 6th and might best be characterized as a coup d'etat that fizzled with remarkably few casualties.
>>>> imagine a few hundred million people getting angry within one election cycle
If that many people get angry, you can bet they're all going to be different people with different motivations. This is partly why revolutions tend to suck no matter how evil the regime was they overthrew; the US got extremely lucky with being able to postpone the post-revolution civil war for a century.