Luigi Mangione: This Week's Backpack Search Ruling, Explained

Welcome back to our crash course in the U.S. Constitution — everything you need to know to better debate those aunts and uncles of yours on Facebook, without the law school price or the weird professors. The law was meant to be understood by the people. This series is here to prove it. With a plethora of parenting analogies to help.

Today’s issue: Luigi Mangione: This Week’s Backpack Search Ruling, Explained

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💡As always, paid subscribers can find the embedded audio voiceover below the “Part 1” header of this issue.

I’ve seen a lot of questions recently about the evidentiary ruling in the Luigi Mangione case — the man accused of killing former UnitedHealthcare CEO Brian Thompson in Manhattan. It’s probably the most publicized case in America right now, but the ruling this week also provides a helpful glimpse into constitutional and procedural law. Certainly not a typical stop on the Substack Legal roadmap, but here we are anyway.

The latest development is not about whether he is guilty. It is about what evidence the jury may eventually be allowed to hear. That distinction is important, especially in a case this public, where a lot of people made up their minds somewhere between the first headline and the hundredth TikTok explainer.

Mangione has pleaded not guilty. The ruling from this week doesn’t decide the case. It doesn’t tell us what happened. It doesn’t tell us what a jury should conclude. Instead, it tells us something narrow but important: which pieces of evidence prosecutors can use, which pieces they cannot, and why the rules for getting evidence matter.

Criminal trials are not supposed to be akin to the aforementioned TikTok video’s comment section. Prosecutors do not get to use every interesting thing police find. They have to show that evidence was legally obtained, properly handled, and reliable enough for a jury to consider. That is the real story here. And the answer the judge came up with this week is…interesting? To say the least?

So today in constitutional law, let’s look at the recent Luigi Mangione ruling — what happened, why it matters, and what the decision tells us about criminal law and the complicated constitutional and evidentiary requirements in America.

(Full audio narration by me, as well as the full text, available for paid subscribers. These lessons take hours to put together, so we’d love to have you on the journey.)