The main terrorist threat today in the United States is best understood as emerging from across the political spectrum, as ubiquitous firearms, political polarization, and other factors have combined with the power of online communication and social media to generate a complex and varied terrorist threat that crosses ideologies and is largely disconnected from traditional understandings of terrorist organizations.
No jihadist foreign terrorist organization has directed a deadly attack inside the United States since 9/11, and no deadly jihadist attacker has received training or support from groups abroad. In the almost 18 years after 9/11, jihadists have killed 107 people inside the United States. This death toll is virtually the same as that from far-right terrorism (consisting of anti-government, white supremacist, and anti-abortion violence), which has killed 109 people. The United States has also seen attacks in recent years inspired by ideological misogyny and black separatist/nationalist ideology. Individuals motivated by these ideologies have killed eight people each. America's terrorism problem today is homegrown and is not the province of any one group or ideological perspective.