Here is an example summary of this reading selection:

In “Freegans: They Live Off What We Throw Away,” Jan Goodwin defines freegans as a group of environmental extremists who reject consumerism, living off the food and belongings the rest of us discard. Freegans scavenge food from supermarket dumpsters, and use the Web to schedule group foraging strikes, taking only what they need and leaving the excess for others. Leia MonDragon, for example, uses money only for rent; her other needs she satisfies by scavenging and building or making what she needs. To stay healthy she uses gloves and her nose, and cleans everything she scavenges thoroughly. Despite working only part of the year, she has plenty to eat and wear, and a large network of freegan friends.

Your summary will differ from this one in the way it is written, but it should include roughly the same information.