Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Inspiring, grassroots approach to environmentalism

Activists John Cronin and Robert F. Kennedy, Jr., wade through the murky Hudson River, sneak onto corporate property, confront corrupt officials, take the polluters to court, and patrol the river in the Riverkeeper boat. The theme that emerges is that the best place to start improving the environment is in our own neighborhoods. Very inspiring.