The large crowd gathered for a rally at MacArthur and then began marching toward Grand Park in downtown Los Angeles, where another rally was expected to be held.
This year's theme is "Solo el Pueblo Shuts It Down!," with the rights of workers and immigrants being the focus of demonstrations nationwide. Well over 100 groups and organizations make up the May Day coalition. March organizers and the Los Angeles Police Department are asking participants to remain peaceful and non-violent.
Large crowds gather for May Day rally
Organizers are also urging people to skip work, school or shopping in solidarity. They say an economic shutdown hits those who don't support them where it hurts - right in the pocketbook.
"That's because we're the workers. We're the ones that run this city. Without us, these companies wouldn't have anything," said Erika Schwerdt with the nonprofit Strength Based Community Change. "It's important to remember that May Day is the reason why we have an 8-hour work day."
Before the march kicked off at MacArthur Park, organizers spoke about their message.
"We're fighting for more. More dignity, more fairness, more opportunity and a real chance for working families to thrive," said Yvonne Wheeler, president of the L.A. Federation of Labor. "Because under this administration, too many working people are being pushed to the brink. The rising cost of living is stretching families thin, while policies continue to target and divide communities, especially in our immigrant communities."
This year's May Day marks the 20th anniversary of "La Gran Marcha," which means the The Great March in Spanish. Back in 2006, the largest public demonstration in U.S. history took place in L.A. More than 500,000 marched in the pro-immigration protest.
"Strength in community. The people united will never be divided. You're going to hear that a hundred times today," said Tonya Somesh with South Asian Network. "That's because when immigrant communities all stand together, we can win and we can fight."