Given the large number of bogus DMCA requests that fly around, it doesn&#x27;t seem that large to me.  Nobody is required to act as the copyright police, nor can anyone other than the copyright holder reasonably be expected to.<p>Copyright relies on permission and the copyright holder is, in fact, the only entity which can determine who has and does not have their permission for a given work.  And sometimes even they get it wrong.  For example, in Viacom v. YouTube they listed videos Viacom itself had uploaded as &quot;infringing&quot; and were forced to withdraw those from their complaint.  And they did that <i>twice</i> because even after hundreds of hours spent on lawyers and legal research, they still couldn&#x27;t get it right.