You won't be hearing about this on MSNBC:"Thomas Conrad, who had an economics class with the gunman, described him as a very opinionated Socialist."

Karl Halverson Pierson, 18, injured two students at Arapahoe High School, turned gun on self

A TEENAGER who may have had a grudge against a teacher opened fire with a shotgun at a Colorado high school, wounding two students before killing himself.

Quick-thinking students alerted the targeted teacher, who quickly left the building.

The scene unfolded on the eve of the Newtown massacre anniversary, a sombre reminder of the ever-present potential for violence in American schools.

Arapahoe County Sheriff Grayson Robinson identified the shooter on Friday night as 18-year-old Karl Halverson Pierson.

The shooter entered Arapahoe High School armed with a shotgun and looking for a teacher he identified by name, Sheriff Robinson said.

"(The teacher) knew he was the target and he left that school in an effort to try to encourage the shooter to also leave the school," the sheriff said. "That was a very wise tactical decision."

Read the rest here:
http://www.news.com.au/world/two-students-injured-in-arapahoe-high-school-shooting/story-fndir2ev-1226783250108