The "No Kings" protest against the Trump administration in Las Vegas drew 8,000 participants, with 15 arrests made.

Thousands of protesters filled the sidewalks and streets in downtown Las Vegas on Saturday night as part of a nationwide effort to rally against President Donald Trump’s administration and its crackdown on illegal immigration.

The “No Kings” protests taking place across the country on Saturday will be peaceful protests against an increasingly authoritarian Trump regime. These protests, now taking place in more than 2,000 sites across the U.S., have been planned for months and are NOT “anti-ICE” protests.

The protest was dubbed “No Kings,” and was part of worldwide demonstrations Saturday targeting the Trump Administration. No Kings is also a reference to fears by some that President Trump is making moves more akin to that of an unchecked monarch. During her brief address, Titus quipped that “Elvis is the only king we want in Las Vegas.”

Protests across U.S. held on the same day as the Army 250th anniversary parade, and Trump's birthday, in Washington, D.C.

Protesters gathered in Las Vegas in a nationwide "No Kings" rally against the Trump administration on Saturday.

The “No Kings” protest in Salt Lake City was struck by violence when a man allegedly brandished a rifle near the crowd

As celebrations for the U.S. Army's 250th anniversary take place in the nation's capital, marchers angry at the president take to nearby streets. (David Dee Delgado for Fox News Digital)