Jane and Kerry are involved in an altercation…

 Jane and Kerry are involved in an altercation that is captured on tape. In the video, Jane is seen walking with her young son when Kerry attacks her. Jane falls to the ground and Kerry assaults her, ultimately punching and kicking her dozens of times. A group of individuals gathers around the two women, take out their cell phones, and record the fight. They do not help Jane or call for help. The behavior of the group is an example of which of the following terms?