After a video surfaced showing migrants apparently being sold at auction in Libya, people worldwide have been calling for action.

Last week, CNN published a report on modern slavery in Libya, featuring a video that reportedly was shot in August and appeared to show a man selling African migrants for farm work.

“Big strong boys,” the man said in the video, according to a CNN narrator. “400 … 700 … 800,” he called out the mounting prices. The men were eventually sold for about $400 each, CNN reported. The Libyan government said it has launched an investigation into slave auctions in the country.

Following the CNN report, demonstrators took to the streets in Paris and other cities last week to express their outrage, and Libyans showed their solidarity on Twitter with the hashtag #LibyansAgainstSlavery.

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