Protesters against US President Donald Trump and his policies have braved frigid temperatures to demonstrate at rallies corresponding with the Presidents Day holiday.

Dubbed “No Kings on Presidents Day” by the 50501 Movement, the latest protests came less than two weeks after a similar nationwide event on February 5 drew participants in dozens of cities.

The burgeoning 50501 Movement – whose name stands for “50 protests. 50 states. 1 movement” – has emerged out of Reddit. Its first nationwide protest was on February 5, drawing thousands of people across many US cities and at state capitols.

Both of Monday’s protests denounced Trump and billionaire adviser Elon Musk, the leader of the President’s new Department of Government Efficiency, an outside-government organisation designed to slash federal spending.

Nearly 1000 people marched in the snow from the Statehouse in Boston to City Hall, chanting “Elon Musk has got to go” and “No kings on Presidents Day!”.

The temperature was below freezing with wind chills in the teens.

Boston protesters, some dressed in Revolutionary War-style clothing from the 1700s, carried signs with slogans such as “This is a coup” and “Cowards bow to Trump, patriots stand up”.

One sign showed an image of Uncle Sam saying “I Want You to Resist”.

“I thought it was important to be here on Presidents Day to demonstrate for what America stands for,” said Emily Manning, 55, a Boston engineer who came to the rally with her two teenage sons.

“American values are not the values of the plutocracy or the limited few rich people.”

Organisers of the protests, which were focused on state capitals and major cities including Washington, DC; Orlando, Florida; and Seattle, said they were targeting “anti-democratic and illegal actions of the Trump administration and its plutocratic allies.”

One sign at the rally that attracted hundreds in the nation’s capital said, “Deport Musk Dethrone Trump”.

Many demonstrations were slated for cities where temperatures were well below freezing as a polar vortex worked its way across the US.

The rallies followed a series of Trump executive orders and came just days after lay-offs across federal agencies as part of an effort to reduce the government workforce.

-with AAP