NYC mass shooter links NFL to brain disease CTE — here’s what it is and how it affects people

A 27-year-old gunman, Shane Tamura, fatally shot four people at a Midtown Manhattan skyscraper, including an NYPD officer, before taking his own life. Tamura, who targeted the NFL headquarters, claimed to suffer from CTE, blaming the league for concealing the dangers of head trauma. The incident has reignited discussions about CTE, a degenerative brain condition linked to repeated head injuries.