Anti-Iran regime protesters gathered in major cities across the globe Saturday calling for a leadership change in a Global Day of Action Rally.

Over 250,000 protesters rallied in Munich, Germany, Saturday with the Munich Security Conference as a backdrop.

“With the number of participants recorded, this gathering is one of the largest rallies held in Munich in recent years,” the Munich Police reported in a press release. “The peaceful atmosphere is particularly noteworthy, despite the high number of participants in the meeting.”

Crowds reportedly chanted “change, change, regime change” and “democracy for Iran” with green, white and red flags with lion and sun emblems waving in the air with a few “Make Iran Great Again” red hats spotted.

Exiled Iranian Crown Prince Reza Pahlavi was among the hundreds of thousands protesting, telling Reuters a possible attack on Iran will either weaken the regime or accelerate its fall.

“People are hoping that, at some point, the decision will be made that there’s no use, there’s no point, we’re not going to get anywhere with negotiations,” said Pahlavi. “Intervention is a way to save lives.”

Sen. Lindsey Graham, R-S.C., was present in Munich for the security conference and echoed a similar sentiment in a sideline interview  Friday.

The senator also took the stage at the Global Day of Action, speaking to the crowd and holding up a black “Make Iran Great Again” hat.

Large demonstrations were also held in Toronto, Melbourne, Athens, Tokyo, London and Los Angeles.

Iranian American activist and Beverly Hills plastic surgeon Sheila Nazarian told Fox News Digital the protests across the globe represent a universal truth.

“When regimes silence their people, the people eventually find their voice. Whether in the streets of Tehran or in diaspora communities around the world,” she said.

Nazarian left Iran when she was 6 years old along with her family.