Barack Obama was sworn in as America's 44th president 1,425 days ago. Since then, five of the 12 deadliest mass shootings in our history have happened. Here they are, as well as other lesser mass gun-killings that happened under his watch.

Wade Michael Page, the 40-year-old Army veteran who allegedly killed seven on Sunday at a Sikh Temple in suburban Milwaukee, was a member of white-power hardcore band End Apathy, according to The Southern Poverty Law Center.

A 40-year-old former Army soldier once stationed at Fort Bragg in North Carolina is the main suspect in yesterday's shooting at a Sikh temple in the Milwaukee suburb of Oak Creek.