Colorado authorities identifying 16-year-old Desmond Holly as a student who opened fire at Evergreen High School using a revolver. Investigators did not say where the shooter got the gun, but said he was radicalized by an extremist network. He tried to find new targets and he he came up against a roadblock on many of those doors.He couldn't get to those kids. They say he continued to reload as he shot out windows and at lockers. Tonight, officials say two students remain in critical condition.Authorities sa ...

Officials identify 16-year-old suspect who opened fire at a Denver-area high school, saying he was "radicalized by some extreme network"https://t.co/GKgLbc5MtQ ...

When things like this happen, whether it be an assassination, an attempted assassination, and/or a mass shooting, we talk a lot about copycats. Something that stands out in my mind is, of course, the shooting of the United Healthcare CEO. In some circles across this country and across the world, he was celebrated for going up against power in a way.And the prosecutor in the case said, and I quote, "Simply put, the defendant hoped to normalize the use of violence to achieve ideological or political objective ...

Joining me now is Robert Pap, director of the Chicago Project on Security and Threats, and Eddie Glad, Princeton University professor and MSNBC contributor. Um, Robert, I know you've been conducting polls measuring Americans attitudes toward political violence for years now. From your research, where are we.We are more radicalized as a country than at any time in the four years that we've been conducting quarterly surveys of support for political violence among Americans. Um, our most recent survey in May f ...

We continue to follow the breaking news of the deadly shooting at a church in Minneapolis where two children were killed and six ch six more children are in critical condition uh along with uh others who were injured in this shooting. But we now have an identification on the shooter. Let me bring in MSNBC's Mark Santia along with Christopher Olri, a former FBI counterterrorism official.Uh, all we knew up until this point, Mark, the the brief description we got at the press conference was early 20s, wearing ...