The morons who deliberately started this fire and then pelted the firefighters should be severely punished.
Gaol time would be to good for them and just add to the existing strain on our prison service.
“Bring back the birch” was a popular saying, not so long ago. Something is needed. Maybe public floggings or perhaps bring back the stocks. Some kind of public humiliation is likely to be more effective than gaol time which is seen by some as a badge of honour.
WrAnTz 
Bloody oath they should be punished and made to help with the cleanup