The jaws movie almost had a "war of the worlds" reaction with people going to the beach and swimming in the ocean. There was a huge decline in people going to the beach after that. The power of the media and controlling people really came out of the jaws experiment.
Hollywood learned they could use a movie like jaws to ignite fears of people going into the ocean.
It was a real game changer in how hollywood made and presented movies.
The age of hollywood psychological warfare really ramped up after that.