When I was a little kid in Bridgeport CT. they had a big parade on the 4th. of July. In the evening they had a huge fireworks display at Seaside Park, over the water.
Most likely we had a cookout during the day with hotdogs 'n' hamburgers but I don't remember that part. At that time we were all young and health was not an issue. And, anyway, no one knew that much about the harm of eating grilled beef products.