Fontanarrosa comments on the death of a fan (Suoto), the threats on journalists, and other forms of violence as a renewal of old calls by El Grafico to end this nonsense (and heed the calls for civility by the government)
Predating many of the accounts by scholars, this 1945 article makes mention of "barras bravas y seguidoras fieles" led by charismatic ring leaders like "Cantinflas".