Red Roderick is an interesting character who highlights something slightly paradoxical about certain rural communities.
When he is drunk, he is a violent and aggressive bully. When sober he is popular for his generosity and singing.
Despite the fact he beats his wife and picks fights with others he is accepted by his community. They are able to look past his failings and focus on his more attractive qualities.
In contrast, the painter is ostracised and excluded by his neighbours. For all his faults, Red Roderick is protected because he mainly adheres to the codes and expectations of the village.