This is a very good idea. Use for example mirrorfoil on cartonage for this....lets show them the mirror 👍👍👍👍👍👍👍👍🐇 And if you can agree, than please share this post as far and wide as possible please. Imagine 100 people in the first row of a demo holding this mirrorshields against the police.....it also sends back their negative and aggresive energy to them i think. Thank you very much for your attention.