this might sound cheesy, but if the personal statement is an honest presentation of one's self, desires, and experiences, than even if the topic has been used many times before, it will, at least, be an original piece. that is why it is best, imo, not to address injustices beyond one's control, i.e. save the world PSs.
if you are an urm and that has been significant in your life, than write about it. same goes for any other so-called played out topics. it is just best, as others have written, to be honest about whatever it is that you are writing about, and not to lose perspective.
casino