More than 500,000 students in the Los Angeles Unified School District began a new school year Thursday with concerns and fear amid the ongoing immigration raids.

Organizations are asking people to participate in a 24-hour boycott, to attend rallies in MacArthur Park and downtown LA and support local businesses and street vendors.

An 18-year-old Van Nuys resident who was taken into custody by federal immigration officers while walking his dog has spent the past week in a detention facility reportedly so cramped that his cellmates can’t all sit or lie down at the same time, a Los Angeles Unified School District official said.

Los Angeles students and teachers return to class for the new academic year Thursday under a cloud of apprehension after a summer filled with immigration raids and amid worries schools could become a target in the Trump administration’s aggressive crackdown.

Benjamin Marcelo Guerrero-Cruz, who attends Reseda Charter High School, was walking his dog last week when he was taken by masked agents, according to a GoFundMe campaign set up to help his family pay legal fees and other essentials.

LAUSD, the second-largest school district in the nation, is back to school on Thursday. This year, the district implemented measure to ensure the "safe passage" of children and parents amid ongoing federal immigration enforcement.

Los Angeles Unified officials said a 15-year-old boy with disabilities was briefly detained at gunpoint near Arleta High School in a case of mistaken identity — an account federal immigration

A man was killed Thursday after being struck on the eastbound 210 Freeway while fleeing federal agents raiding a Home Depot in Monrovia, California.

Federal agents turned up in downtown Los Angeles, where Gov. Gavin Newsom was delivering a speech, and detained at least one person in the latest high-profile immigration enforcement operation in the city.