Triggered

The video quite vividly records the angry grunts of the elder members of the herd. They stood their ground for a long long time but eventually even they were made to leave because rest of the herd was panicking and they decided to leave the one little baby behind in order to take care of the rest of the herd. But who were these men in the jeep and why had they disturbed these elephants and forced them to abandon the little member?