swiss farmers' spokesman markus ritter calls it quixotic nonsense.besides, they're useful for finding the cows in the fog -- and the cows love them, he claims. >> the cows enjoy them. every animal's bell has a characteristic ring. i've observed my cattle for 30 years, and they've never suffered because of the bells. reporter: even so, holden has amassed some 4,000 sympathizers in her facebook group. the other side has also formed a facebook group to counter what they call the 'vegan, left-wing, liberal-minded do-gooders'. one user went so far as to ask what this dutchwoman was even doing in switzerland. another called on her to adjust better to her adopted home. >> i was born in holland, but i grew up here. i feel swiss. switzerland is my home country. i love it. so i think that's uncalled for. besides, kindness to animals has nothing to do with nationality. reporter: the cow-bell protester is not a lone voice in the wilderness. respected institutions in zurich conducted an experiment with 19 cows wearing five-and-a-half-kilo bells. the researchers f