Torah forbids lashon hara. You can only say that before a Sanhedrin at the time of the Temple in case the person is going to be judged, and only if you are absolutely sure
Well then, do we commit lashon hora when we talk about Hillary or Olmert?
It is permitted to expose those who we are sure that are doing evil, so it's ok to talk about Olmert's crimes of ethnical cleansing of Jews and neglecting Eretz Yisrael. It's not lashon hara, He himself admits that he tries to give away Eretz Yisrael to terrorists!!! And the same applies to Hillary if she speaks out for terrorist Palis!!!!
But when someone may be inocent, or when it is a private sin, it causes no good to speak, so it is in vain, and LASHON HARA