The police think offending the hegemon is a crime

Scoop has posted the text of Bruce Hubbard's email to the US embassy. It reads:

To the USA, Embassy.

Fw: drop narparm on babys and kids in Afganistan and Iraq and have invaded 72 other nations since to install US backed military dictatorships to smash popular democratac freedom...

Why are the police wasting their time and our money with this? No matter how offended Americans are at being reminded of their country's actions (or poor spelling and grammar), there is no law saying "thou shalt not offend the hegemon".

The police are interfering with political protest and freedom of speech. They need to be hauled back into line and reminded that we live in a democracy, not a totalitarian state.