The pilot reported that, while landing he executed a go around due to numerous people on the grass runway. On the second approach the airplane touched down hard and bounced so the pilot added power and initiated a go-around. During the go-around, the airplane impacted a wire fence at the end of the runway and subsequently struck powerlines before it came to rest. The airplane sustained substantial damage to the wings and fuselage. The pilot reported that he had previously only flown low approaches at the airport, and he had not landed there before. He also reported there were no preaccident mechanical malfunctions or failures with the airplane that would have precluded normal operation. The nearest weather reporting station, about 27 miles southeast of the accident site, reported around the time of the accident, altimeter setting of 30.31 inches of mercury, and temperature of 68° F. The calculated density altitude was 7,349 ft.