Hey hey hey what's up....
PRC also human okay? 
Don't because of cultural difference and start to detest one
another..
Must learn how to embrace each other's culture and make
friends!
like what jojo and jocelyn said, be kind to one another.
Nothing is up, humans mah, be it PRC, Indian or Locals, sure got
negative feeling, you also cannot blame our locals
negative behavioral toward them.
Let said if one day, SIngaporean all go to Shanghai or Mumbai to
work as foreigners, how would the locals there treat them, I guess
more worst than what is happening here, at least people here just
talk and forget about it, they never use violences and nasty way of
treating others.
Singaporeans, in fact is already very kind to foreigners, that
is why, more are coming.