Internet firms are starting to crack down on gruesome ISIS execution videos following the viral spread of ones showing the beheadings of American journalists James Foley and Steven Sotloff. A Silicon Valley insider told the Associated Press that companies drafted plans to remove these videos last week after Foley's execution and put the plan into action when ISIS announced Sotloff's death Tuesday. The insider would not say whether this came at the request of the government. YouTube, Twitter, and other sites shut down accounts within hours of the Sotloff video. Not wanting to be seen as a vehicle for propaganda, tech companies have been attempting to force out ISIS "platform by platform," according to the insider.