In March 2017, The federal government of the uk pulled its advertising strategies from YouTube, after studies that its advertisements had appeared on videos made up of extremist material. The federal government demanded assurances that its advertising and marketing would "be sent safely and securely and correctly". The Guardian https://brightbookmarks.com/story20418979/new-step-by-step-map-for-%D8%A8%D9%88%D8%AB%D8%A7%D8%AA-%D8%A7%D9%84%D9%85%D8%B9%D8%A7%D8%B1%D8%B6