For John, BLUF: Just stupid. Nothing to see here; just move along.
Here is the BBC report on the Mosque fire in Morden, in the Southwest part of London.
Here is a report with a more spiritual bent, from The Inquisitr, "LONDON MOSQUE FIRE TEEN SUSPECTS ARRESTED, ACT ‘BIG BLOW’ TO COMMUNITY". The reporter is Mr Denzel Hammett.
The good news is the Mosque itself was not damaged and only one person went to hospital.
The bad news is that there are people who can't differentiate between being opposed to something and being an ass about it. The two teenagers accused, if guilty, were acting with extremely poor judgment. Let us hope such actions are, in the US, minimal. We can't fully eliminate such stupidity, but all of us should stand against it.
Regards — Cliff