When Gas Stops Being Invisible

Footnotes:

[1] Anna Feigenbaum, “100 Years of Tear Gas. A Chemical Weapon Drifts off the Battlefield and into the Streets,” The Atlantic, August 16, 2014. Online version:
https://www.theatlantic.com/international/archive/2014/08/100-years-of-tear-gas/378632/

[2] Eric Hobsbawm, Age of Extremes. The Short Twentieth Century, 1914-1991, London, Abacus, 1995, p. 28.

[3] Feigenbaum, op. cit.

[4] Hobsbawm, op. cit.

[5] Feigenbau, op. cit.

[6] Ariela Levy and Patrick Wilcken, “End the abuse of tear gas for the sake of peaceful protesters,” Amnesty International, June 12, 2020,
https://www.amnesty.org/en/latest/news/2020/06/end-the-abuse-of-tear-gas-for-the-sake-of-peaceful-protesters-in-hong-kong-the-usa-and-everywhere-else/

[7] OHCHR, “Basic Principles on the Use of Force and Firearms by Law Enforcement Officials,” 1990, 
https://www.ohchr.org/en/professionalinterest/pages/useofforceandfirearms.aspx#:~:text=Law%20enforcement%20officials%2C%20in%20carrying,of%20achieving%20the%20intended%20result

[8] United Nations Human Rights, Guidance on Less-Lethal Weapons In Law Enforcement, New York and Geneva, United Nations, 2020, p. 1 n. 7,
https://www.ohchr.org/Documents/HRBodies/CCPR/LLW_Guidance.pdf

[9] Levy and Wilken, op. cit.