https://www.theguardian.com/technology/2018/apr/06/myanmar-facebook-criticise-mark-zuckerberg-response-hate-speech-spread

Groups that have worked with Facebook to flag dangerous content reveal it took more than four days for it to respond when messages started circulating

A consortium of civil society, human rights and monitoring groups in Myanmar have criticised Mark Zuckerberg’s response to the spread of hate speech on the platform and accused the social media giant of failing to act quickly enough to curtail dangerous messages that incited violence inside the country.