That is life it seems. On one side it should be easy for women to come forward and believed when something does occur, but false charges can, well, TomS showed the outcomes. Yet, you cannot make it overly difficult for the women to come forward nor always doubt every word they say, or these things will continue and likely escalate (which occurs all too often). Unfortunately, this subject seems to lack any impartial nature in the courts and media, a lot like custody battles.
Well, in all these instances I would say that the justice system was successful. In the first two cases the accused were cleared by the judicial system, the injustices were committed by the press and unscrupulous individuals that did not have the same exacting standards as our judicial system.
The lst case is a bit more difficult, but I believe it shows that our Justice system can work (unfortunately, the main flaw in our judicial system is when the opposite happens). Conviction must be beyond a reasonable doubt, her testimony perhaps combined with a small amount of circumstantial evidence in her favour should be more than enough to win an acquittal. The burden placed on prosecutors is generally insufficient in our judicial system, 'reasonable doubt' is too wide open for interpretation, a number should be placed there, for instance a certainty within a few percent of a hundred should be necessary for a conviction; unfortunately, too often a prosecutor will demonstrate that one is more likely guilty than not guilty, and a jury will side with the prosecutor. A guilty person going free is not a significant failure of the judicial system, the real failures are when innocent people are convicted; or one one is given a sentence beyond what would be fair for the crime they committed.
So in the case of women comming forward needing protection, by all means let them come forward, and by all means give them protection, and help them. BUT, another should never be convicted on their testimonies alone, the accused in these cases should have all the same rights mentioned above; if you want a conviction you need multiple reputable witnesses or strong physical evidence to corroborate a testimony, the word of one or even two people should not be taken seriously by a prosecutor until more evidence is presented to them.