Well initially the bear... he could root through a trash bin like a pro.
Being in the wrong spot like the guide was, is a no win situation... RIP!
A couple of years ago, in Glacier Park a park ranger had the day off and went back country biking... flew over a rise and crashed into a griz. Game over for him. RIP.
I don't go hiking into those areas in the spring... some folks just gear up and go. RIP.