Americans planned demonstrations against President Donald Trump across the U.S. on Saturday as a counterpoint to the 200,000 people expected to attend the military parade in Washington.

The rallies were among hundreds of "No Kings" protests held throughout the United States, timed to coincide with a military parade celebrating the 250th birthday of the U.S. Army in Washington, D.C. Saturday was also Trump's 79th birthday.

Thousands of demonstrators marched along Fifth Avenue in New York City on Saturday for a "No Kings" protest.

"We expect all participants to seek to de-escalate any potential confrontation with those who disagree with our values and to act lawfully at these events..."

In New York City, the biggest "No Kings" demonstration began at Bryant Park on Saturday before moving down Fifth Avenue to Madison Square Park.

"No Kings" protests against the Trump administration are taking place today in and around New York City as part of nationwide demonstrations. Fifth Avenue was closed to traffic from 42nd Street to 23rd Street in Manhattan as protesters marched from Bryant Park.

The First Amendment of the U.S. Constitution and Article I Section 8 of the New York State Constitution protects freedom of speech, assembly, and petition. While not an exhaustive list, here are a few rules New York protestors must follow, according to the NYCLU:

The No Kings Day of Defiance protests will happen during the military parade in Washington on Saturday for the Army’s 250th anniversary — which coincides with Trump’s birthday.

Tens of thousands of lefty “No Kings” protesters took to the streets of New York City and across the country Saturday in a “day of defiance” against President Trump as the US Army held its 250th anniversary military parade in Washington,

Saturday marks the first full day of Marines on duty in Los Angeles, one week after protests against Immigration and Customs Enforcement raids ignited in LA and spread to other cities across the U.S.,