http://www.southeasternoutdoors.com/wildlife/mammals/black-bear-attacks-fatal.html
Heh, out of the first 5 or so, how many do you actually think were done because of proctection of cubs?
During mating season, males are very aggressive.
You don't want to be anywhere near a sow with cubs.
Nobody is denying that bears kill people, but when you consider the numbers of them and the numbers of attacks on people, it's a rare occurance.
States that protect bears and don't allow the hunting of them risk overpopulation and more bear attacks than states that keep the numbers in check.
Hungry bears are dangerous bears.