Kack was at the local Tuscon City Council meeting when a man and a woman, both wearing hats in support of President Donald Trump, started to vocally protest Tuscon's "Sanctuary City" measure.

Alex Kack, who went viral for laughing at anti-immigration activists, wrote, “If you had been there, wouldn’t you laugh too? Sitting inches away from people making fools of themselves ...

But Kack stayed in his chair, cracking up the whole time, as police officers escorted the two out of the meeting. “I wanted to see how it ended,” he said.

Who is Alex Kack, aka Green Shirt Guy? He didn’t return a request for comment. But he told Mashable, who identified him as a 28-year-old field organizer for Peoples Defense Initiative, ...

Kack, a longtime activist and comedian in Tucson, was there in support of the Sanctuary City Initiative. He was in no way planning to go viral, to become #GreenShirtGuy.