Helen Robinson falls down when Atticus drives up to her house because she inferred that the only reason Atticus would be there was to inform her of Tom's death.
Jem goes with Atticus to tell Tom Robinson is dead
Atticus sits in front of the Robinson house like a guardian when he is waiting for Helen, showing his support and protection for her as she walks home from work.
jem and dill
He harassed her by following her to work everyday. The Ewell's also whispered obscenities at her and only stopping when Deas (Robinson's boss) threatened to get him arrested.
Bob Ewell targets anyone that insulted him at the trial. This includes Atticus Finch, as the top of his "hit list." His two other notable targets were Judge Taylor and Helen Robinson, Tom's wife. He failed in hurting either, and when he tried going after Atticus' children, he died at the hand of Boo Radley.
The men go talk to Atticus at his house because they are members of a mob looking to harm Tom Robinson, and they want to confront Atticus about defending him in court. They are seeking to intimidate and threaten Atticus to stop him from continuing with the trial.
In "To Kill a Mockingbird," Atticus takes his daughter Scout with him to visit Mrs. Robinson. Scout accompanies him to deliver some items and to keep Mrs. Robinson company.
Bob Ewell is involved in accusing Tom Robinson of assaulting his daughter Mayella, attacking Atticus Finch after the trial, and threatening to seek revenge on Atticus and his family following the trial.
Atticus returned home to Maycomb to defend Tom Robinson, a black man wrongly accused of raping a white woman.
The men in front of the Finch house wanted to warn Atticus about the potential danger Tom Robinson faced from the lynch mob who planned to harm him in jail. They stood guard to protect Atticus and the jail from any potential threat.
Scout found out what happened at Tom Robinson's house by following Atticus to the jail where a group of men were attempting to harm Tom. She, Jem, and Dill arrived just in time to witness Atticus diffusing the situation with his calm demeanor and determination.
Atticus stood guard at the jail so that the local people would not lynch the prisoner that was inside. Atticus felt he needed a proper trial, which did take place, and the man was found innocent.