When a life is taken in public, we look for a reason why. Now, the man accused of a high-profile killing says the answer lies inside his own head.

WHAT HAPPENED

Luigi Mangione stood in a New York court on Wednesday. His lawyers told the judge they plan to use his mental state as their main defense.

They want to show he did not have the clear mind needed for a murder charge. They will focus on how he was thinking during the attack in December.

Mangione is accused of shooting Brian Thompson outside a hotel. Thompson was the head of UnitedHealthcare, one of the biggest firms in the country.

WHAT THE EVIDENCE SHOWS

• The hearing took place in Manhattan on Wednesday morning.
• Mangione is the only person charged with the shooting.
• The victim was Brian Thompson, a top health care executive.
• The defense will focus on Mangione's psychiatric health.
• The goal is to challenge the idea that he meant to commit a crime.

THE BIGGER QUESTION

This case touched a nerve because many people are angry at the health care system. But if the defense is about his mind, does that change how we view the motive?

We have to ask if this was a planned protest or a break from reality. Can both things be true at the same time?

THE OTHER SIDE

Prosecutors say this was a cold, planned attack. They point to the way the shooter waited outside the hotel and then ran away. This evidence of planning usually makes a mental health defense much harder to win.

WHAT HAPPENS NOW

The trial will likely move slower now. Doctors will have to talk to Mangione and report back to the court.

For the family of Brian Thompson, it means a longer wait for a final answer. For the public, it means the trial will focus more on doctors than on the shooting itself.

WHAT WE STILL DON'T KNOW

What specific mental health issue will the doctors find?

• Will the judge allow all the medical evidence to be shown to a jury?
• How will a jury feel about this defense given the planning involved?