Rivalry Political Statements Community Engagement Adaptation to New Rules Team Colors Multitasking Online Harassment Celebrity Influence Toxicity in Sports Collecting Toxic Fandom Regional Rivalries Stadium Experience Aggression in Sports Supporter Solidarity Cultural Identity Gender Dynamics Boycotts International Sports Events National Identity Supporter Dynamics Hostility Crowd Dynamics Crowd Interaction Media Criticism Celebration Practices Team Allegiance Bandwagon Fans Crowd Influence Hooliganism