How are the two hawks like Granny and Granddaddy Cain in "Blues Ain't No Mockingbird?"

in
"," the two hawks do symbolize Granny and Granddaddy Cain because they are attacked in
their own environment. Granny and Granddaddy want the film crew to leave, stating simply that
"This is our own place." The film crew looks at the Cains with indifference, thinking
they are a stereotypical poor, suburban/rural family on food stamps. This stereotypical
prejudice is also based on a racist assumption that the Cains must be on welfare, despite the
observation of Smilin man that Granny raises her own vegetables. 

Just as
Grandaddy kills the hawks, the film crew intends to "shoot" the Cains for their
documentary. It is ironic...