"Two students, cloaked in black trench coats and armed with guns and bombs, opened fire Tuesday at Columbine High Scho…"

"With news of the murders being broadcast locally and nationally on live television, Columbine High School Klebold loo…"

"Some students said the tragedy could have been worse had it not been a “senior skip day.” The day is known in circles…"

"I got disturbed after Las Vegas. I got disturbed after Parkland. I was feeling like I killed Jaime Guttenberg. Gun ow…"

"High-capacity ammunition magazines are the common thread that runs through most mass shootings: giving attackers the …"

"Investigators say that on Nov. 30, Jared L. Loughner went to a Sportsman’s Warehouse in Tucson, Ariz., and bought a G…"

"In America today—where virtually anyone with a credit card and a grudge can outfit their own personal army—mass shoot…"

"These results indicate that fatalities due to mass shootings were lower during both the federal and state assault wea…"

"More than one a day. That is how often, on average, shootings that left four or more people wounded or dead occurred …"

"Whether a state has a large capacity ammunition magazine ban is the single best predictor of the mass shooting rate i…"