Death and despair loom on the horizon. While Standing Next to a Major World Leader Ingratiate yourself with your chosen mark. Become a trusted member of the inner circle. Sew a hand ax into a coat or jacket so that it is easily removable but not particularly visible. Make a statement.
Video tape is preferable because the TV news shows love visuals.
The more visual material they have the better. The next best thing would be audio tape. It won't hold an audience as well but at least it can be played under the video of your death. Never write a letter. No one reads anymore.