In March 2017, The federal government of the United Kingdom pulled its advertising campaigns from YouTube, after stories that its adverts had appeared on video clips made up of extremist material. The federal government demanded assurances that its promotion would "be delivered safely and securely and correctly". The Guardian newspaper, https://bluetechsolarcell.com/%e0%b9%82%e0%b8%8b%e0%b8%a5%e0%b9%88%e0%b8%b2%e0%b9%80%e0%b8%8b%e0%b8%a5%e0%b8%a5%e0%b9%8c-%e0%b8%ab%e0%b8%99%e0%b8%ad%e0%b8%87%e0%b8%9a%e0%b8%b1%e0%b8%a7%e0%b8%a5%e0%b8%b3%e0%b8%a0%e0%b8%b9/