Yeah, abuse comes in many forms, not just violence. Maybe show how the abuser publicly shames the person on the porch, very loudly. And maybe the MC (the kid?) observes, and notices neighbors watching, turning their heads away, moving inside from their own porch. Getting to the heart of it on many levels -- it makes the abuser feel more powerful, the person being abused feel shame and small, and the observers near and far are anything from "glad it's not me" to scared for themselves, to backing off and not wanting to get involved. Depending on where you are in the story (beginning, middle, end) you'll want to show where the MC is in understanding all these things in all the characters involved. Because even the the observer three houses away who keeps reading the newspaper as though he/she doesn't hear the abuse is deeply involved.