I have my reservations as to whether this thread can actually be of any meaningful use, as there is no largely accepted definition of what exactly a rape culture entails.
All arguing about what must happen to definitively illustrate the presence of a rape culture in every last person's mind...yes, I do believe that rape culture exists. One (perhaps all-too-often overlooked) example (easily researched on wikipedia *cue groans of staunch academics*) of this is that in most western countries, marital rape was not outlawed until starting in the 1960s (unless you count the soviet bloc), and some, such as Ireland and Finland, did not pass such laws until the 1990s or later (see: Liechtenstein). Wikipedia also notes a 2010 study that indicated that the Finns were/ are particularly notorious for victim blaming, with 74C% of Finns blaming provocative behavior of women for violence against women.
Other important info I just found: 1 out of six American women experience attempted rape or completed rape in their lifetime. This is compared to 1 out of 33 men. If you wish to learn more from the source where I found this information, go to Who are the Victims? | RAINN | Rape, Abuse and Incest National Network
That's about all I have to offer as far as material that is easily compiled into one post goes, for the moment. However, for a particularly damning portrait of intimate partner violence against women in the United States goes, I recommend viewing the PDF on this site: Costs of Intimate Partner Violence Against Women in the United States|Publications|Violence Prevention|Injury Center|CDC