Current CNN host Piers Morgan sanctioned national UK newspapers to publish fake photographs of Iraqi prisoners being abused, humiliated and urinated on, directly jeopardising the lives of American and British soliders during war. This was at a time when he was a senior editor at Mirror Group newspapers.
Story here for those not familiar:
http://news.bbc.co.uk/2/hi/uk_news/politics/3716151.stm
He was also called to the Leveson Inquiry concerning the biggest phone hacking scandal in living memory, including hacking The Pentagon!