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Mourners hold signs depicting victim's eyes during a rally in support of Charlie Hebdo, a French satirical weekly newspaper that fell victim to an terrorist attack, Wednesday, Jan. 7, 2015, at Union Square in New York. French officials say 12 people were killed when masked gunmen stormed the Paris offices of the periodical that had caricatured the Prophet Muhammad. (AP Photo/John Minchillo)
Mourners hold signs depicting victim's eyes during a rally in support of Charlie Hebdo, a French satirical weekly newspaper that fell victim to an terrorist attack, Wednesday, Jan. 7, 2015, at Union Square in New York. French officials say 12 people were killed when masked gunmen stormed the Paris offices of the periodical that had caricatured the Prophet Muhammad. (AP Photo/John Minchillo)

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    Friend: Victims were peaceful, tolerant

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Friend: Victims were peaceful, tolerant

CNN's Hala Gorani speaks to Helene Constanty, a former Charlie Hebdo journalist and friend of the victims, about the murder of her colleagues.

Friend: Victims were peaceful, tolerant

CNN's Hala Gorani speaks to Helene Constanty, a former Charlie Hebdo journalist and friend of the victims, about the murder of her colleagues.