Fast-food workers in 33 countries on six continents took to the streets Thursday, protesting for higher wages and the ability to strike without retaliation from employers.

In New York City they demonstrated at a midtown Manhattan McDonald's (MCD) and a Domino’s Pizza (DPZ) shop. The video above shows workers marching from Domino's Pizza on West 40th Street between 7th and 8th avenues, chanting, "The people united will never be defeated."

Related: New restaurant strikes put spotlight on the minimum-wage debate

Protests were held at 150-plus cities in the U.S., where workers are demanding $15 an hour -- substantially more than their average wage of $9 an hour. The #FastFoodGlobal hashtag trended in nearly 20 U.S. cities and 50 foreign cities.

Related: Fast-food workers across the global strike to demand higher pay

"These unprecedented international protests are just the start of a worldwide campaign to change the highly profitable, global fast-food industry," says Ron Oswald, general secretary of the International Union of Food, Agricultural, Hotel, Restaurant, Catering, Tobacco and Allied Workers' Association (IUF).  The campaign to raise fast-food workers' wages started in New York City in November 2012.

Follow The Daily Ticker on Facebook and Twitter (@DailyTicker)!

More from The Daily Ticker

Obamacare "wasn't fundamental change at all, just a big political mess": Steven Levitt

The Profit's Marcus Lemonis: Here's why small businesses fail

The 'mystery' of falling interest rates explained