What you fail to mention Blender, is that among the student protesters shining the lasers into President Felipe Calderón's eyes, some were from Amnesty International protesting that he is turning a 'blind eye' to torture!
In history quite a few presidents have been 'shot at' and hit, but not all fatally
As coconutty says, you do not know the strength of the pens, those used in our 'densely populated area' are labelled in the hundreds of mW category, goodness knows what they actually are! May I suggest the next time you catch someone, ask the court to have the pen released to the unit and have it tested.
Pens in the lower powered category are combatted by the blink reflex, however more powerful pens at the upper end of the spectrum between the visible and IR wavelengths, can't be! How can you so easily tell which is which?