On August 1, 2014, the hacker group AnonGhost successfully targeted the website of the governor of Connecticut. The hackers left the above picture and were operating as part of #OpSaveGaza - a coordinated cyber-attack on Israeli websites following Israel's military operation in the Gaza Strip. AnonGhost have already hacked the websites for the Israeli newspaper Ha'aretz and the Galilee Development Authority.
Source: Hackread.com, August 1, 2014.