Easy. Find a supplier you can trust.
Hit the farmer's market. Join a meat CSA. Take a Saturday drive and check out a few farms.
Don't be afraid to strike up a conversation and ask questions. Any farmer worth their salt will be happy to tell you all about how they do things. Heck, they'll probably even let you see for yourself.
Just keep an eye out for legitimate certifications and claims. "Pasture-raised" and "grass-fed" are great places to start. But press for details. Make sure you're comfortable with the answers.
When you know exactly where your meat is coming from and how it was raised, you can feel good about what's on your plate.
And THAT, my friends, is the magic of local meat.
Look, at the end of the day you've got to decide what matters to you and vote with your wallet.