"Extremist threats now move at the speed of the internet, and the social divisiveness that can exacerbate extremism must be met with community resilience to heal community divides. For those reasons and more, we must invest in preventing targeted violence and violent extremism, in our communities as well as online. To date, efforts to prevent extremism have been overwhelmingly focused on Islamist-inspired extremist threats-we need immediate and uncontroversial investments in prevention to change the trajectory of extremism in the United States as soon as possible. Extremist threats now move at the speed of the internet, and the social divisiveness that can exacerbate extremism must be met with community resilience to heal community divides. For those reasons and more, we must invest in preventing targeted violence and violent extremism, in our communities as well as online. To date, efforts to prevent extremism have been overwhelmingly focused on Islamist-inspired extremist threats- we need immediate and uncontroversial investments in prevention to change the trajectory of extremism in the United States as soon as possible. Civil society and other actors can help create off-ramps to prevent individuals from taking up violent extremist’s cause. Investments in academic institutions to research what works in prevention, training law enforcement on white supremacy and extremism, and empowering local communities through civil society are critical to preventing the next extremists. Given that these extremists frequently plot against religious institutions, those deemed high risk should have access to security measures to reduce their vulnerability to attack."