Washington: Thursday's massacre at a Community College in Oregon was the 142nd school shooting in America since the December 2012 shooting at an elementary school in Connecticut, making for an average of nearly one a week.

As many as 88 people are killed by gun violence in America each day, according to Everytown for Gun Safety, a gun-control group founded by former New York City Mayor Michael Bloomberg, The Washington Post citing data from ShootingTracker.com said mass shootings-defined as incidents in which four or more people are shot -- have happened hundreds of times over the last several years.