It's not fake, DHS has confirmed:

http://news.cnet.com/8301-13578_3-57584511-38/homeland-security-cuts-off-dwolla-bitcoin-transfers/

They may just be going after internet gambling rather than trying to kill bitcoin...

http://calvinayre.com/2013/05/15/business/homeland-security-seize-bitcoin-linked-payment-processor-funds/