There can be several reasons why YouTube videos might be blocked in some countries. 1. License Issue: Certain major companies don’t make their content available to some countries due to license problems. Either they don’t have the right to share the entertainment materials in some regions, or they have limited access to some countries. 2. Violating Local Law: Violating local laws and spreading hate speech cause blocking of YouTube videos.   3. National Security Legislation: In 2014, Turkey blocked YouTube for almost a week because a video got leaked, which has some voices recorded in the PM’s office. This raised concerns and created a “National Security Issue” and led to YouTube blocking. If national security is at stake, videos might get blocked. 4. Network restriction: Many organizations especially schools or offices put network restrictions to prevent students and workers from watching online content. In this way, schools try to lower the online activity of students and offices use it to increase the efficiency of employees.