“Shortly after French police responded to a hostage situation on Monday night, the country’s national police department posted a warning on Twitter: ‘Do not participate in sharing hostile photos,’ it read. The tweet carried the hashtag #Magnanville — the name of the Parisian suburb where an attacker had just been killed in a standoff with police after he stabbed a police captain and his wife.
But as police officers still considered raiding the apartment, viewers could already watch a disturbing online video filmed by the attacker inside the house.”
Source: France’s latest ‘terrorist attack’ exposes dark side of social media – The Washington Post
