There obviously are a percentage of people who are selfish and irresponsible, and they won't voluntarily secure trash or quit feeding birds and other wildlife. They need to be given one warning, then face draconian fines, say $500 for the next offense, escalating by a factor of five for each subsequent time they're caught. Their property, real as well as personal, should be sold as needed to pay the fines. Serious jail time should also attach with the second fine. Judges and prosecutors should not have much flexibility, if any, to lower the penalties. 

The increasing bear/human encounters also argue against any sale of public lands--federal or state-- to private interests. More development means even less wild habitat for bears, leading to more killing of bears, and undoubtedly, human deaths as well.