Who does the government kill on their hunt for montag and what does this say about the government ?

The government's scapegoat was an innocent man, killed for the benefit of those viewing his death on television.

The innocent man stood bewildered, a cigarette burning in his hand. He stared at the Hound, not knowing what it was. He probably never knew. He glanced up at the sky and the wailing sirens. The cameras rushed down. The Hound leapt up into the air with a rhythm and a sense of timing that was incredibly beautiful. Its needle shot out. It was suspended for a moment in their gaze, as if to give the vast audience time to appreciate everything, the raw look of the victim's face, the empty street, the steel animal a bullet nosing the target. "Montag, don't move!" said a voice from the sky. The camera fell upon the victim, even as did the Hound. Both reached him simultaneously. The victim was seized by Hound and camera in a great spidering, clenching grip. He screamed. He screamed. He screamed! Blackout. Silence. Darkness.