Review the website excerpt and then answer the question.
You may think of hunger as a problem that exists elsewhere, but nearly fifty million people in the United States are affected by food insecurity. That's almost fifty million people who sometimes have to make trade-offs between having enough to eat and meeting other basic needs. Although many don't realize it, hunger affects urban, suburban, and rural communities. Joining together, we can take steps to end hunger—not just worldwide, but right next door.
What is the text's main purpose?