“The last serious terrorist incident in the United States occurred in San Bernardino, Calif. Those people were converted over the internet,” Clinton said. “You can build all the walls you want. You can build them all across Canada; they got a bunch of foreigners in Canada. You could build a seawall in the Atlantic and a seawall in the Pacific. …. And then you could send the Navy to the Gulf of Mexico to block anybody else, and put all the planes in the Air Force up. You could not keep out the social media.”Actually, the wife went to an Islamic school in Pakistan before returning to Saudi Arabia. She and her husband met online, and he was probably radicalized by her, but he also went to Saudi Arabia for a while -- that is probably where they received whatever training they had that allowed them to build destructive devices and execute the attack.
Not that social media and self-radicalization aren't a problem. Your example, however, was particularly poorly chosen.