When Tommy stared feeding the people with imaginary people trying to take over the world, that´s how the people started to believe there was a monster and how that led to people having suspicion of everyone.
Theme: Thoughts Are The real Monsters
This is the scene where Les Goodman told the people that Tommy was the monster and then started chasing after the kid and the mom.
This is when Charlie shot the Random man because he thought he was the alien
The theme for Monsters Due on Maple street is that thoughts are the real monsters, for example, when Tommys imaginary mind was talking about aliens, this made everything suspicious. They thought that one of the people in the nieghborhood were a alien. Another example is when Les told the people that Tommy was the monster. He might have been thinking he was the monster and made adults try to kill a kid. Last but not least, when the person who was coming from the shadows was walking, Charlie thought it was the alien and killed the man. In conclusion, thoughts were what caused deaths, suspicion, and damage which leads a path to a monster.