Even if you like to eat meat, you can support farmers with more humane practices instead of industrial factory farms.
There are now various certification programs to help you choose.
Humane Farm Animal Care has a certification system called "Certified Humane Raised and Handled." You can find out more about it on their
The Animal Welfare Institute also has a certification system called "Animal Welfare Approved." This program appears to be more rigorous than HFAC's program, but as a result it is harder to find animal products that meet the criteria in your local grocery store. Find out more on their website.
Here's an interesting article from the New York Times about choosing your eggs.
Get to know the farmers in your farmer's market, and ask them how their animals are raised.