The lines in this excerpt from act V of Romeo and Juliet that show that the Capulet-Montague feud has brought tragedy not only to the two families but also to other families in Verona is: "And I, for winking at you, discords too, have lost a brace of kinsmen. All are punish'd."
In this part of the text, we find the word "punish'd" that means that the feud has brought tragedy, and the word "All" that means that the tragedy has spread to other families in Verona.