When you visit Yosemite National Park one thing you expect to see, hopefully from a distance is the presence of bears. Many campers would consider it a successful trip if they manage to get a snap-shot or two of a mother bear and her cubs forging for a mid-afternoon snack. A photo like that would be valued treasured for years to come in that family. However, Park Rangers at Yosemite report incidents of bears raiding campgrounds, breaking into cars and even hurting people to get food has increased dramatically from last year. Property damage due to bears has reached over twelve thousand dollars. Unfortunately Park Rangers have had to kill several bears that threatened human life by breaking into occupied houses and cabins in their search for food.
http://www.extranomical.com/NEWS/YOSEMITE_NEWS/yosemite_national_park_reports_increase_in_bear_encounters_339.html