The man known as #GreenShirtGuy has been revealed after his laugh was seen by millions online. Alex Kack became the talk of social media in a video of a Trump supporter protesting at a city council meeting on immigration in Arizona. Kack, who was wearing a green shirt, was seen laughing at her as she became more boisterous. Kack was given the hashtag #GreenShirtGuy and was the No. 1 trending topic on Twitter Wednesday.