Gov. Greg Abbott, a staunch supporter of President Trump’s immigration agenda, is the first governor to call on the National Guard as protests spread to multiple cities.

In 1970, four students were killed when National Guard troops opened fire on anti-war protestors at Kent State University.

The National Guard has at times detained protesters in its deployment to Los Angeles, an official said Wednesday, as demonstrations against Immigration and Customs enforcement raids spread to other major cities.

Tensions flared in Los Angeles late Monday. On Tuesday, teams worked to scrub away, cover up or fade out protesters' graffiti.

HOW WE GOT HERE: The protests erupted after Immigration Customs Enforcement (ICE) officers on Friday carried out raids in three locations across L.A., where dozens of people were taken into custody. Newsom called the raids “chaotic federal sweeps” that aimed to fill an “arbitrary arrest quota.”

Trump’s border czar says he’s sending National Guard to fight LA anti-ICE protests as clashes continue into second day - Tense confrontations between police and demonstrators in L.A. continued for a second day on Saturday,

Gavin Newsom and deploy the National Guard and Marines to quell Los Angeles’ immigration-related protests against federal raids in the city. A long-time strong voter base for Trump, some veterans have,

Hegseth says the National Guard could be deployed to other cities if riots escalate. Follow Newsweek's live blog.