They did it in California, now the mountain lions and bears have joined the coyotes in managing the numbers of moutnian bikers and hikers, as well as children out of arms reach. When I was in California I saw bit in KCal or soemthing from a security camera with a young kid shateboarding in a private gated community. The security camera caught a coyote trying to attack the kid. THeres many issues about coyotes in California.
I was camping at Joshua tree one winter and the coyotes were circling around outside my tent. My dog was inside my tent, he and my wife had a hard time sleeping withthem yipping and walking around outside the tent. THey never tried to come in the tent, and dont know what would have happened if they did. There had to be at least 4 or 5 of them. Occasionally I could see them touching the tent with their muzzle.