Thousands of people gathered in Southern California on Sunday, Feb. 2 to call for immigration reform and protest against the mass deportations promised under President Donald Trump‘s administration.

In Los Angeles, a large group of anti-ICE protesters blocked both sides of the 101 Freeway near the Alameda Street exit. A couple of thousand people also were demonstrating near downtown.

The protesters gathered Sunday morning on Olvera Street for what the Los Angeles Police Department called a non-permitted demonstration. The crowd grew to a few thousand people who marched to City Hall, before many walked onto the freeway near the Alameda Street exit.

Footage from the scene showed well over 100 boisterous protesters walking on both sides of the freeway shortly after noon, many carrying U.S. or Mexico flags or signs assailing ICE.