It's hard to believe that this is related with news, fud, regulation or even futures market. All these things are appointed as some of the reasons behind this correction or crash or dump, or whatever people are calling it. I used to believe that it was a mixed of all those things but I'm not so sure anymore, because these dumps seem completely "random". There are rumors that this is related to the coins stolen from MtGox, and maybe that's true. There are also a lot of news about bitcoins that were apprehended because they were linked to criminal activities. Maybe some of those coins were sold as well. I just don't know now.
It doesn't really matter though, because bitcoin still has a bright future, since it's technical development is improving, so this means that bitcoin is evolving and is going no where.