Thousands of people nationwide have shown up at protests and rallies opposing ICE raids as unrest grows in response to the Trump administration's immigration crackdown.

Multiple people were detained by U.S. Immigration and Customs Enforcement agents in downtown San Francisco on Tuesday morning, merely 12 hours after thousands of protesters took to the streets in the Mission to rally against the widespread raids taking place across California.

Video shows San Francisco police firing pepper-spray rounds, but SFPD brass says no "weapon" or chemical "agent" was deployed.

LOS ANGELES − Two people have been charged with throwing firebombs during five days of protests that have rocked a downtown section of the city and prompted President Trump' controversial decision to send 4,000 National Guard troops and 700 Marines here, authorities said Wednesday.

Demonstrators who hoped to show peaceful support for immigrant rights protesters in Los Angeles wound up clashing with the police.

Two Palestinian men had their visas revoked by Customs and Border Protection (CBP) at San Francisco International Airport Wednesday and remain in federal custody, according to Supervisor Bilal Mahmood.

Two men are being charged by the U.S. attorney in Los Angeles for possession of an unregistered destructive device for their alleged roles in LA protest violence, federal prosecutors will announce Wednesday. Emiliano Galvez and Wrackkie Quiogue are both accused of trying to throw Molotov cocktails at police, according to federal prosecutors.

From Seattle to Austin to Washington, D.C., marchers have chanted slogans, carried signs and snarled traffic through downtown avenues and outside federal offices.

Protests erupted nationwide, including in San Francisco, Chicago and NYC, after tensions escalated in LA over immigration raids. See the photos.