Ashamed Americans Fat Should
I guess it depends on the intensity of the "shame". Should people who have significantly more than someone else feel embarrassed and guilty while they enjoy their likely overabundance while others suffer from neglect? Yes, that is what drives entrepreneurs and missionaries and charities and is a factor of the race or species as a whole to want to keep itself healthy all around, to take care of all its component parts, to maintain an overall cohesive vigor.
Western civilization suffers from ills of excess, there is no arguing that - we get other things but we get things no other cultures get, a testament to our accomplishments as well as our inability to moderate and enact self discipline.
Shame though, that's even another matter entirely - society lacks shame on so many levels - gluttony is hardly some rare occurrence that should shock us into awareness, as humans have lost our inhibitions in a lot of ways and seem to have no shame in dozens, maybe hundreds of ways, as our cultures have grown and aged.