De Menezes, Tomlinson, Duggan

Protecting London's tens of millions
From dusky immigrant Brazilians,
If there be problems, be they noted
Before the culprits are promoted.

Should any breach of law occur
With old news-vendors here and there,
Let none be charged with the assault
Because it was nobody's fault.

Though shooting's bad and killing's awful,
For some at least, they're always lawful.
The lesson: if you're caught some day,
Young man, cast not your gun away.