"Kill him. Kill the son," a voice whispered. (3.15)
We don't know who says this, but it lends an eerie mood to the scene of Will's beating and abduction. The violence seems to be in the air, whispering in the ears of the mob. This would also seem to suggest that the mob plans to murder Will. But, like many details in the story, it's ambiguous.
He released her and half struck, half flung her across the chair. (5.6)
In terms of possible injury, it matters much whether we are dealing with a hard wooden rocker, or a soft cushy recliner. But, in terms of the implications of McLendon's treatment of his wife, it's all the same. His violence toward her is almost casual, practiced, automatic, and scary.