i need 3 quotes that tells that atticus should not have taken a stand to defend tom robinson

Three quotes that support reasons other people didn't want Atticus to defend Tom Robinson?

yes

There are very few quotes that pertain to reasons Atticus shouldn't have defended Tom Robinson other than the racism, which is made very apparent by the people in the community.

Children:

Cecil Jacobs made me forget. He had announced in the schoolyard the day before that Scout Finch’s daddy defended niggers.

Atticus' explanation to Scout:

Scout, you aren’t old enough to understand some things yet, but there’s been some high talk around town to the effect that I shouldn’t do much about defending this man.

Family:

"If Uncle Atticus lets you run around with stray dogs, that’s his own business, like Grandma says, so it ain’t your fault. I guess it ain’t your fault if Uncle Atticus is a nigger-lover besides, but I’m here to tell you it certainly does mortify the rest of the family—"

Neighbors:

But Mrs. Dubose held us: "Not only a Finch waiting on tables but one in the courthouse lawing for niggers!"

"Lemme tell you somethin‘ now, Billy," a third said, "you know the court appointed him to defend this nigger."

"Yeah, but Atticus aims to defend him. That’s what I don’t like about it."