Members of the California National Guard have arrived in downtown Los Angeles. President Trump ordered 2,000 Guard troops to be deployed following protests in the LA area over raids by ICE.

Service Employees International Union California leader David Huerta was injured in a scuffle with federal agents. Sandra Diaz, vice president of SEIU-USWW California, talks with NPR's Scott Detrow.

Air quality can be impacted by smoke from wildfires. Our reporter set out to build an air filter -- in a style the EPA praised, using only things she already had at home.