Starbucks

So Starbucks have told shareholders that, if they don't like the company's support for Gay Marriage, they can sell their stock. What kind of moral compass does this display? It is not clear that a view on same sex marriage is integral to the sale of coffee and buns. However, paying proper tax on the profits made by the company certainly is. How do executives of Starbucks justify their failure to deal with the profits issue which does concern them while making a stand on same sex marriage which does not?