In the past, there had been several occurrences of large non-school sponsored gatherings labeled as riots, where UMass officials had been called in. After the Red Sox won the World Series in 2013, an estimated 3,000 students gathered in the outdoor space around South West Residence Hall. In response to the situation, UMass police officials were called in. Police accounts state that some students participated in disruptive behavior: knocking over trash bins and climbing trees. Rubber bullets and tear gas were dispersed into the crowds. According to WGGB, 14 people were arrested for failing to disperse and 1 for disorderly conduct. Whether or not the use of police force was necessary is still a controversial topic among students, the administration, and UMass and Amherst Police Department.