Here's one visual commentary on the arrangements falling into place for the G-20 summit in Pittsburgh this week that's circulating in the protest community. Hint: Think Nazgul as host city  ambassadors.

WASHINGTON -- Pittsburgh was chosen as the site for the G-20 summit to show the world its successful economic transition and to display how America's future rests not just on its most populous cities, President Barack Obama said in an interview.

As G-20 leaders meet this week to assess the progress of the global recovery, they need look no further than their host city of Pittsburgh for, in the words of President Obama, "a bold example of how to create new jobs and industries while transitioning to a 21st century economy." Rather than turning to protectionism as the global economy shifted during the 20th century, Pittsburgh leveraged its human capital, invested in developing new technologies and embraced globalization. G-20 leaders can find inspiration in the city's success as they take stock of the current economic recovery and set an agenda to help restore global growth.

In 1970, I was 20 years old. From my cozy efficiency apartment in Shadyside, I sat as a spectator, watching but not personally affected by all the turmoil over the Vietnam War.