"All I'm saying is, kindness don't have no boundaries." - Kathryn Stockett, The Help
No matter where you are or what you do or what your station in life is, you can offer kindness to others. Kindness doesn't fit into borders, or income brackets or even species. It was meant to be shared. You don't have to "only" be kind to this type of person or pet. You can pretty much bring a smile to anyone's face with the simplest act or word, and even minimal effort.
Kindness is just a way of life. You can find ways to be kind to others every where you look. Any city, any town, walk of life. Look for simple ways that you can be kind today.