Tommy suggested that the aliens came in the form of humans to prepare the way for invasion.
Woman One shouts "His car just started on it's own!" suggesting that Goodman might be different from the rest of them.
Les suggested that Charlie shot Pete Van Horn because he was going to tell them something about him.
In the story The Monsters Are Due on Maple Street, the power of suggestion ignites a mob mentality which leaves one person dead and countless others injured. In the very beginning Tommy creates a story from a comic book he read suggesting that when the aliens come they will meet with a family already sent ahead to prepare the way. The power of suggestion that some family among them may not be what they seem immediately sets a tone for suspicion. When an unsuspecting neighbor, Les Goodman, has his car start on its own, he is immediately suspected of being someone other than who he claims to be. At this point the story describes the group as taking the first steps toward a mob as they begin to converge on the hapless Goodman. By the conclusion of the scene we have a dead man on the sidewalk. Les Goodman suggests that Charlie was awfully quick to shoot Peter who might have been coming back with information as to who didn't belong among them. As neighbors continue to throw out unfounded accusations and blame, the one peaceful street escalates into a chaotic mob with people running around wildly grabbing weapons and destroying each other's property .