PHOENIX (AP) — Alex Kack remained mystified Thursday as to how he became an internet sensation when all he did was laugh at a city council meeting in Arizona.

"Everyone else was doing something far more active than me honestly. I was just laughing," Kack told The Associated Press. "You could have watched me do the same thing in a movie theater."

His amused reaction to an anti-immigrant protester at a Tucson City Council meeting Tuesday over a proposed "sanctuary city" law has earned him folk hero status on social media. The video clip from KVOA-TV has been viewed 9.5 million times. With no way...