Viral video shows police in Chicago struggling to keep their eyes open and coughing after the video's uploader, Ryan Garza, says they were exposed to tear gas on Saturday. Other verified video shows protesters clashing with federal agents throwing tear gas canisters on the same day outside of an ICE facility. Days earlier, Broadview Police Chief Thomas Mills said it had become a "dangerous situation" for first responders, whom he said were repeatedly being exposed to tear gas by federal agents.

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