The most obvious case concerns Boo - Atticus scolds his children for spying around his house, telling them to stop torrturing the poor man. They are not to act out the scissors scene on their front porch either, as this humiliates the Radley family.
Jem hushes his sister when she insists on knowing more about Dill's father. Dill takes the lead, inventing "whoppers" about his fictive father. He doesn't get punished or even chided, for people realize this is a form of compensation.
Atticus accepts payment for legal services in collards and hickory nuts because Mr Cunningham can't pay cash. He is not "at home" when Mr Cunningham delivers, for Atticus understands this is embarrassing for him.
At school Scout tries to explain to Miss Caroline Walter Cunningham's situation, an act of kindness in the beginning but which finishes in a school yard brawl. Atticus explains to Scout how Miss Caroline, though unfair, felt overcome as a new teacher confronting such problems. At the Finches' table, when Scout comments on the syrup Walter pours all over his food, Calpurnia sends her to the kitchen, telling her if Walter wants to eat the tablecloth he can, but he must be treated as "company."
Mrs Maudie also puts Miss Crawford's acrid tongue in its place when criticizing Atticus' involvement with the Robinson case.
Atticus "One Shot" puts the rabid dog out of its misery.
All these incidents illustrate kindness and compassion shown towards others in need.