An estimated 50,000 people are expected to gather this week in Porto Alegre, Brazil, as a counterpoint to the World Economic Forum which is meeting in New York. Under the banner "Another World is Possible," the broad collection of left-leaning activists and general critics of global capitalism say they will outline a vision of how the world should work. NPR's Martin Kaste Reports. (4:05) For another perspective on globalization, the PBS program, Now with Bill Moyers goes to California, tonight at 9pm/ET. Check pbs.org for local listings.