Trial Begins for Boulder Mass Shooting Suspect Ahmad Alissa

Defense argues insanity while prosecution claims deliberate planning in the 2021 King Soopers attack that left 10 dead.

Opening statements highlight stark contrasts between prosecution and defense narratives.
Prosecutors present evidence of meticulous planning and intent behind the shooting.
Defense contends Alissa's schizophrenia rendered him incapable of distinguishing right from wrong.
Jurors will review graphic video footage and hear testimonies over the next three weeks.
The trial marks Colorado's first mass shooting case since the Aurora Theater and STEM School shootings.