Terror threat

The Orlando attack could transform the picture of post-9/11 terrorism in America

The New America database on deaths due to terrorism in the United States gathers information about violent extremist activity and separates incidents into several groups — including those motivated by jihadist ideology, such as that of al-Qaeda and its affiliated groups, and those driven by non-jihadist ideologies, such as right-wing and left-wing beliefs.

In recent years, domestic terrorism motivated by right-wing hate groups had been behind most deaths. But that changed with the massacre in San Bernardino, Calif., last December. The shootings in Orlando would alter the picture further, according to the New America.

Before Sunday’s shooting, the data showed, 45 people had been killed in the United States from terrorist incidents linked to violent jihadism since September 11, 2001, while 48 deaths had been linked to incidents of right-wing terrorism.

Including Sunday morning’s attack, here are the cumulative deaths caused by Islamist attacks and right-wing attacks over the past 13 years...