Ken Marsh, public information officer for Fish and Game's Division of Wildlife Conservation, said that the bears' habit of eating trash contributed to the problem, but so did the people who continually test the patience of local wildlife.
"The bear's been growing bolder and so have the people," he said, noting that some people seem to think of bears more as pets than as wild animals. "You've got people getting too close and pushing those boundaries."
The crowd around the bears got so big on Wednesday that it actually blocked off the street and prevented a school bus from getting through, Marsh said.
He emphasized that Fish and Game wasn't happy about killing the bears. "It's an unfortunate situation," he said.