But without that shared concern, few would give the issue another thought.

The gang's shared concern for ancient sites was only one of the links holding them together.

This widely shared concern over declining electoral turnout served as the starting point for a broader investigation into the health of the connections between the public and the political process.

There are plenty of shared concerns to be spotted: of subject matter and style, of tone and intent.

As the show progresses, the parallels and proximities, the common threads and shared concerns grow more and more evident.