Google owns YouTube, and Facebook owns WhatsApp, and those four web companies are under fire from Prime Minister Theresa May in the United Kingdom for providing a breeding ground for the spread of terrorism in that country. But the cycle of blaming Internet companies followed by company efforts to remove extremist contents is not addressing the problem in a meaningful way. Germany is proposing large fines for failure to remove extremist content quickly enough, but will terrorists still find ways to plan attacks and will Germany be better prepared to prevent them? One MP in the UK has called for internet companies who terrorists have used for communication to be held legally liable for such content. Ban one app or other mechanism, and people will create another. This is one of the most important and difficult problems of our time.