Um, is this what an ambassador is supposed to do?

I think the answer is "no." A rich socialite waltzing in and criticizing local practices is not the best method for winning friends and influencing people:

U.S. Ambassador Caroline Kennedy has tweeted her concern at the “inhumaneness” of a Wakayama Prefecture village’s traditional dolphin hunt.
“Deeply concerned by inhumaneness of drive hunt dolphin killing. USG (U.S. Government) opposes drive hunt fisheries,” she tweeted Friday.
Kennedy, the lone surviving child of assassinated U.S. President John F. Kennedy, took up the diplomatic post in November.
Every year the fishermen of Taiji corral hundreds of dolphins in a secluded bay, select a few dozen for sale to aquariums and marine parks and then stab the rest to death for meat.
This year, fishermen and divers in the village have caught at least 25 dolphins in a process to select captives before the mass slaughter, environmentalists said Saturday.

I think this makes a compelling case for ambassadors not being allowed to tweet. By Kennedy's definition, all killing of animals for food is inhumane. Please note that the reference to "hundreds" of dolphins is clearly superceded by the paragraph that states the fishermen caught "at least 25" dolphins. Kind of a big difference there, isn't it?

Frankly, I don't give a fuck about how people catch their food. If they eat what they catch, why do you care who they catch it? I doubt that tweets like this will help make Sweet Caroline an effective ambassador. Plus, if that song really was written about or inspired by the 3-year-old Caroline, then it is really fucking creepy: