Hardball with Chris Matthews 07/20/12

Fatalities, injuries in mass shooting in Colorado theater

Journalist and “Columbine” author Dave Cullen and Clint Van Zandt, NBC News analyst and former FBI profiler, join Hardball to discuss the Aurora theater mass shooting, and the suspect in custody now who opened fire, killing 12 and injuring 59 others. ... more Duration: {{video.duration.momentjs}}