At Columbia, Student Protesters Say They Were Attacked With Chemicals - The New York Times

The chemical attack at Columbia University nobody is talking about - Epicenter NYC

1968: Fifty Years Later

Students walk out in 'emergency protest' following alleged chemical spray at Friday demonstration

Columbia Limited On-Campus Protests, So Students Took to the Streets - The New York Times

Columbia Limited On-Campus Protests, So Students Took to the Streets - The New York Times

Hundreds call for intifada, hail Houthis at Columbia University anti-Israel protest

New York state politicians condemn alleged chemical spraying of protesters

Thousands protest outside Columbia against campus treatment of pro-Palestinian groups

How a Pro-Palestinian Student Group Became a Leader of Campus Protests - The New York Times

In NY, Jewish Columbia student alleges harassment by violent anti-Israel protesters

New York educators horrified by Zionist chemical attack on Columbia University students - World Socialist Web Site

Censored! Meta Deletes Popular Pro-Palestine Accounts in New York City

Skunk (weapon) - Wikipedia