Most ignored and underutilized by the American public and the press

The roles:

1. political or watch dog role

2. Economic role

3. Sentry role

4. historical/record keeping role

5. entertainment role

6. Social role

7. marketplace of ideas role

In the 21st century, which role from the above is most ignored (and underutilized) by the American public and the press.

On the other hand, which role is most needed in American society today?