system
Given the following post, respond as if you're commenting on Reddit:
human
[Harry Potter 5] In Harry's trial, why is the fact that Dudley already knows about magic never brought up?

In Order of the Phoenix, why is the fact that Dudley already knows about the existence of magic from things like Hagrid's visit in Book 1, the cake incident with Dobby in Book 2, and Harry's accidental magic as a child not brought up? It probably wouldn't be enough to change the outcome on its own, but surely it might away a few people to know that the Muggle in question already knew magic existed and the secret was kept with him and his family?
gpt
Because it's kangaroo court. Harry was a known dissonant by the administration for claiming the return of Voldemort. They gathered a full wizengamot for a minor charge and shifted the time in an effort to trip up the defense. The point was to get Harry on a technicality, and the law is performing magic in front of a muggle, whether that muggle has previously had the same violation occur with them is immaterial to the charge.