Weekends with Alex Witt 10/25/14

Students describe HS shooter as popular

Jim Cavanaugh, NBC News Analyst and retired ATF Special Agent-in-Charge, talks with Ayman Mohyeldin about Jaylen Fryberg, the student who opened fire at Marysville High School in Washington on Friday, and the challenges law enforcement faces in analyzing ... more Duration: {{video.duration.momentjs}}