There is a newer version of this record available.

Preprint Open Access

Bayesian Estimate of Federal Agents' Use of ZnCl2 Gas Against Black Lives Matter Protesters

Simonis, Juniper L.

DataCite XML Export

<?xml version='1.0' encoding='utf-8'?>
<resource xmlns:xsi="" xmlns="" xsi:schemaLocation="">
  <identifier identifierType="DOI">10.5281/zenodo.4059330</identifier>
      <creatorName>Simonis, Juniper L.</creatorName>
      <givenName>Juniper L.</givenName>
      <nameIdentifier nameIdentifierScheme="ORCID" schemeURI="">0000-0001-9798-0460</nameIdentifier>
      <affiliation>DAPPER Stats</affiliation>
    <title>Bayesian Estimate of Federal Agents' Use of ZnCl2 Gas Against Black Lives Matter Protesters</title>
    <subject>Black Lives Matter</subject>
    <subject>Chemical Weapons</subject>
    <subject>Hierarchical Bayes</subject>
    <subject>Metal Fume Fever</subject>
    <subject>Police Brutality</subject>
    <subject>Zinc Poisoning</subject>
    <date dateType="Issued">2020-09-30</date>
  <resourceType resourceTypeGeneral="Text">Preprint</resourceType>
    <alternateIdentifier alternateIdentifierType="url"></alternateIdentifier>
    <relatedIdentifier relatedIdentifierType="DOI" relationType="IsVersionOf">10.5281/zenodo.4059329</relatedIdentifier>
    <relatedIdentifier relatedIdentifierType="URL" relationType="IsPartOf"></relatedIdentifier>
    <rights rightsURI="">Creative Commons Attribution 4.0 International</rights>
    <rights rightsURI="info:eu-repo/semantics/openAccess">Open Access</rights>
    <description descriptionType="Abstract">&lt;p&gt;Law enforcement&amp;rsquo;s use of chemical weapons is a threat to human and environmental health, exemplified during 2020 Black Lives Matter (BLM) protests in Portland, OR, where city, county, state, and federal agencies have deployed various chemicals for over 100 days. In the second half of July, Department of Homeland Security (DHS) agents used an exceptionally toxic and unknown weapon to quell free speech in support of Black lives and against federal presence. With significant support from the community, I combined first-hand accounts, media reports, videos and photos of munitions, primary literature and analytical chemistry to identify the weapon as gaseous Zinc Chloride (ZnCl&lt;sub&gt;2&lt;/sub&gt;) from so-called Hexachloroethane (HC) &amp;ldquo;smoke&amp;rdquo; grenades. I then used hierarchical Bayesian methods to estimate that DHS deployed 24 (23 - 27) HC grenades in July. The gas released is so toxic that the grenades deployed produced enough ZnCl&lt;sub&gt;2&lt;/sub&gt; to kill the author (~100 kg) 137 (131 - 154) times over and its release has led to persistent major health issues in the exposed population. Given prior case histories of ZnCl&lt;sub&gt;2&lt;/sub&gt; exposure and novel symptoms associated with HC grenade use by DHS, ZnCl&lt;sub&gt;2&lt;/sub&gt; is certainly the causal agent and has created an ongoing human and environmental health crisis extending well beyond the protests&amp;rsquo; footprint. DHS&amp;rsquo;s wanton use of ZnCl&lt;sub&gt;2&lt;/sub&gt; against protesters will have lasting impacts for decades and was identified through a community of civilians standing up to say Black Lives Matter.&lt;/p&gt;</description>
All versions This version
Views 4,4541,473
Downloads 2,615752
Data volume 4.8 GB699.6 MB
Unique views 3,4051,098
Unique downloads 2,180626


Cite as