Y_Shun and FireIce:
Taking pictures of cabby whacking passengers (if there's any) would
have the following double-sided effects:
1) Photograph(s) and video(s) related to the incident would serve
as evidence when police report are made and investigations are
carried out.
On the other hand,
2) The victim of such incidents may regard photographer as
"selfish"
But, there is a reason why passerbys would not come near and help
stop the cabby, which has occured in the HK cabby whack passenger
video. They do not come near to prevent being injured and whacked
by the aggressor (the cabby involved).
