There was an expression, once commonly used, to describe a situation in which it was easy to exploit people: "like taking candy from a baby." As with all such similes, the illustration itself was meant to be the extreme, self-evident case. Stealing a baby's candy is something so outrageously objectionable that all decent people must oppose it. It would concern anyone, and everyone. It would be everybody's business.
We don't hear that expression much any more for fairly obvious reasons. There is, if anything, far too much "candy" -- and variations on the theme of candy, such as soda, sugary cereals, and so on -- to go around; and too much of it in particular heads right into the mouths of our babes. The new-age problem is selling far too much candy to babies (well, children, really). That, too, is objectionable.
I believe we should regulate food marketing to children far more diligently than we do. You may believe I should mind my business. I agree with you!
There doesn't seem to be much we can agree on these days across the spectrum of ideologies and politics. We are, at this juncture in our history, a very politically polarized society -- where arguments for gun control confront arguments for "Stand Your Ground." Food marketing to children is among the many issues caught in the vice of opposing convictions. There are those who believe this is a clear case for regulation, and others who feel that parental responsibility is the only counter-measure required.