I sometimes volunteer at an urban farm. I just love how you can cultivate, process, and distribute food in the city.
What exactly do you do there?
Mostly grow veggies but I've visited some other farms that involveanimal husbandry, aquaculture, agroforestry, urban beekeeping. 
That sounds fun though, I should look into trying that myself
Yes, I think the whole community should get involved. It doesn't matter where you live. It's great for food security, nutrition, and income generation.