How does Priestley present generations and tensions between them?

The play implicitly draws out a significant contrast between the older and younger generations of Birlings. While Arthur and Sybil refuse to accept responsibility for their actions toward Eva Smith (Arthur, in particular, is only concerned for his reputation and his potential knighthood), Eric and especially Sheila are shaken by the Inspector’s message and their role in Eva Smith’s suicide. The younger generation is taking more responsibility, perhaps because they are more emotional and idealistic, but perhaps because Priestley is suggesting a more communally responsible socialist future for Britain.