The difference is that movies and TV shows are often specifically made to elicit those reactions. Storytelling is essentially a hack that uses our emotions to implant lessons.
The part where sports events aren't specifically made to elicit aggression?
The OP claimed that aggression caused by sports events is comparable to e.g. crying due to movies. Movies are specifically made to elicit crying. Sports events are not specifically made to elicit aggression. Which part is difficult for you to understand?
And I replied to you, specifically, regarding sports not being a hack on our emotions.
I suppose this begs the question, do you burn couches when a movie takes an emotional turn?
I have no contribution to why certain people do so around sports, other than to say 20% of the population also believes that the earth is flat, that is to say, they’re morons.