I saw the words "bear" and "food" from a distance and decided to investigate, but I'm shocked that the sign is actually warning about hazardous bears!
I had never heard of such a thing !!! Bears,as everybody knows, are well educated and refined, nicely mannered creatures, maybe we like beer a little too much, but it's not a crime...
A local bear explains me that just a few hooligans are giving some bears a bad name (they can't hold their beer well).
Almost all bears, also in USA, are of course decent law abiding citizens.