Do The Hippie Hippie Shake

I am more than happy to give to charity, but not one who employs the tin shakers. It’s just something about someone shaking a charity tin that makes me not want to give them my spare change, in fact it takes all my will power not to snatch the tin off them and throw it down the street. I don’t see the purpose of shaking the tin, is it to show us that they have money in it so it must be a good charity or are they just some sad loser who dreams of playing percussion in a reggae band and this is how they practice?