How to delete Facebook activity log?
Facebook activity log is the tool which lets you review and manage what you share on Facebook.
Unfortunately there is no link or button for activity log deletion.
This is because, activity log tracks everything you are doing on Facebook including likes, shares, searches, status updates etc, so you can not delete the entire activity log but you can clear one activity after another by clicking delete, or unlike etc.
Because Facebook searches are also saved in your activity log, you can clear your search by reading this post: