In Chapter 25 of To Kill a Mockingbird, Scout notes that Maycomb is curious about Tom Robinson's death for "about two days." Tom's death is "typical" to the Maycomb residents because it is
...typical of a n--- to cut and run. Typical of a n---'s mentality to have no plan, no thought for the future, just run blind first chance he saw. Funny thing, Atticus Finch might've got him off scot free, but wait---? Hell, no. You know how they are. Easy come, easy go. ... the veneer's mighty thin. N--- always comes out in 'em.
This passage exhibits the hypocrisy and the rationalization of the residents of Maycomb who attribute a stereotypical manner to Tom's behavior in trying to escape, in a manner that relieves their own consciences.
The reader need only recall Tom's having run when Bob Ewell returned home and saw Mayella hug and kiss him. After Tom gives his testimony about this incident at the trial, Atticus asks him,
"Then you ran?'
"I sho' did, suh."
"Why did you run?"
"I was scared, suh."
"Why were you scared?"
"Mr. Finch, if you was a n--- like me, you'd be scared, too."
From these very words of Tom Robinson, it is clear that he knows that it is certain death if he is caught with a white woman hugging him, regardless of what he has actually done. So, rather than being "typical" in the Jim Crow South that would convict him summarily for a crime that he has clearly not committed or for a beating to Mayella that he is physically unable to have given, for Tom running is the only option outside of hanging. Tom obviously feels that an appeal on his case is futile; furthermore, he becomes terrified of the mob that may come again to hang him. So, he does what any normal creature on this earth would do: He tries to escape certain death. And, because other Negroes of the South have been in similar frightening circumstances, they, too, run since they feel that there will be no justice dealt them either.
That there is no justice for the Negroe is inadvertently admitted by the Maycomb hypocrites when they say that Atticus may have won Tom an acquittal, but would Tom wait: "but wait--? Hell, no." Upon rethinking this statement, the townspeople return to Jim Crow in their "Hell, no." No Negroe can be allowed to get off from any accusation that he has been with a white woman. To feel better about themselves, then, these hypocrites rationalize Tom's escape attempts as the innateand stereotypical stupidity of a Negroe and nothing more.