How Ethical is Marketing Food to Children?

In keeping with my recent favor of wanting to understand the obesity epidemic as it relates to the world of children, I decided to watch this TED talk by Anna Lappe.  With food companies spending $2 billion annually on marketing food to children, it is frightening to hear about the breadth and depth of messaging that the food industry is able to exert.

The obesity epidemic continues to grow here in the US, and public policy is slowly catching up to this world of food marketing.  As a huge proponent of educated decision-making and utilizing policy to minimize our obesogenic environment, I found this talk quite interesting.  What do you think about Anna's message?  What is your response to the marketing of food to children?

[To the food industry] My children, all of our children, are none of your business. - Anna Lappe