The people around the victim are not sikhs.
Instead of questioning turban, beard, seva, langar etc, we need to realize that it is upto the people (practising a faith) who could hold the flag high. Generally, a matter of show-off in those garbs.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/interfaith-dialogues/508-we-all-call-ourselves-sikhs-yeah.html
Why go that far even? Let us look at our own family for just two generations. I havent come across a family yet, which lives in peace with all those elders, youngers in one place. So much difference in thinking! These gaps are sometimes so far, that brothers/sisters, parents/kids dont talk at all! In general situations, things dont go so much out of control, but in other situations, they just go out of control. First look has to be at own family, instead of looking at others. Once we know the importance of peace in own family, then only we will be able to help others. Or else these are just talks and talks, just the way I am doing those right now.
Before saying 'Sarbat da Bhala', let us peek into our own lives, if we are able to do bhala of ourselves first. If not, then what a big liar I am to say 'Sarbat da Bhala'!
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=508
Regards.