Police: All Empire State shooting victims were wounded by officers

The officers unloaded 16 rounds in the shadow of the Empire State Building at a disgruntled former apparel designer, killing him after he engaged in a gunbattle with police, authorities said.
Three passersby sustained direct gunshot wounds, while the remaining six were hit by fragments, according to New York Police Commissioner Ray Kelly. All injuries were caused by police, he said Saturday.

Why does anyone think that if there were more people firing more rounds, there would have been fewer people hurt?