I think this whole incident is awful and a policing failure which needs to be addressed - but there is one thing I remain utterly convinced of, which is that the Sikh community by-and-large is a massive net positive for this country despite being quite a small population. They are one of the most generous, charitable and tolerant groups out there and the amount of work they do voluntarily for wider British society should not be undermined by this event. Unless something drastic happens, I will always stick up for them on that front.
It is no surprise to me that for many of them, their first reaction is going to be one of dismay and horror and an attempt to try and correct the wrongs perpetrated by one of their number.