It is hard for me to look at, say, Steubenville[1] (to take just the most publicized of several examples that I've seen in the news lately) and understand how anyone can suggest that accused rapists aren't given a presumption of innocence in our society. The blame heaped on rape victims is often tremendous, even when everyone knows that it happened.
(In the Steubenville case, there were widely shared photos documenting what happened to the young woman in question and at least one video of a guy at the same party laughing about what his friends had done to her, and most of the local community evidently still strongly sided with her rapists.)
[1] http://sports.yahoo.com/news/highschool--steubenville-high-s...
If you look at the wider picture of media coverage, quite the opposite. Reddit started the witch trial pretty much instantly, with some of the most upvoted comments being for life in prison or worse.
Look at the backlash when CNN referred to the accused as boys with a formerly promising future whose lives were now ruined. God forbid you show an ounce of sympathy for accused rapists, because it's impossible to be sympathetic to the victim and not want anyone to go through the hell that the rest of their collective life is going to be.