Here's the story behind this.
I posted the picture on my large bitcoin facebook page.
www.facebook.com/BITCOlNTwo days after posting, I received an email from facebook saying that Western Union Holdings, Inc filed a DMCA claim against me, citing their ownership of the Western Union *trademark* (strangely, not their copyright on the ad), and that Facebook decided to remove the content.
I went ahead and filed a counter-claim, where I had to swear that I believe Facebook wrongfully granted their takedown request. Now, Western Union has 10 days to either file a federal court order, or Facebook will reinstate the image. I see it as a win/win situation. If western Union actually sues me for posting the image, it will come back to bite them 1000x over in negative PR alone. Plus, I'm not the original content creator, and the image should be legally protected as "comparative advertising".
And you will lose. US courts are *very* generous when it comes to defending trademarks, and clearly you are using a trademarked image (not sure why you and everyone else keeps calling it copyright, this has nothing to do with copyrights).
As stated before, it has nothing to do with them being afraid of bitcoin; if it can be demonstrated in court that they knew you were using their trademarked image and they did not oppose your use, you could then claim ownership of the trademark for yourself.