That’s a little late to claim something as notorious as that happened to the Bedouins. Knew nothing about it, sure!
Though why doesn’t the original article say how large the group of students was. Seems to me that if it was really more than a hundred, they could have easily subdued the handful of enraged Bedouins.
Killing someone requires a murderous state of mind. These were teenage yeshiva students on holiday. They wouldn’t know how to want to kill someone, let alone pull it off. The entire claim is preposterous. The company later fired the workers. Why they aren’t in jail is a question begging to be asked. See related links.