Elon Musk posted a cryptic message about the "No Kings" protests after activists took to the streets across the U.S. over the weekend.

The event was one of more than 2,000 “No Kings” rallies held across the country on Saturday, protesting what organizers call “authoritarianism, billionaire-first politics, and the militarization of our democracy.

Leading up to the military parade in Washington, D.C. Saturday, as many as 2,000 cities erupted in a coordinated, nationwide protest.

Held in cities across the U.S., the “No Kings” demonstration was a rejection ... organized by the Trump administration that took place in Washington, D.C. ・CNN reports that more than 2,000 protests were scheduled across all 50 U.S. states.

Cities large and small across the U.S. saw crowds gather Saturday for planned "No Kings" protests against President Trump.

Between activism, election results and protest turnout, the prevailing political winds suggest the backlash to the president is real.

Democracy is “in real trouble,” Mark Ruffalo told MSNBC’s Antonio Hylton while attending the “No Kings” rally in New York City Saturday. His words were echoed by Ellen Pompeo, Kerry Washington, Jimmy Kimmel, and many more notable people and celebrities who spoke out in support of the nationwide protests.

OneRepublic's Ryan Tedder said that the massive nationwide 'No Kings' protests on the 250th anniversary of the U.S. Army are a 'super bummer.'