How does Lord Capulet's angry reaction to Juliet's refusal to marry Count Paris address the theme of family?

Lord Capulet's angry reaction to Juliet's refusal to marry Count Paris addresses the theme of family because it showed what little choice Juliet had when it came to wanting to marrying him. He did not care about Juliet's happiness but his own and the fact that Juliet felt and knew this pushed her to make the choice to run away and the overall ultimate choice that she made at the end of the story.