By Brad Brooks, Phil Stewart, Idrees Ali and Dietrich Knauth LOS ANGELES (Reuters) -Hundreds of U.S. Marines arrived in the Los Angeles area on Tuesday under orders from President Donald Trump, as the city's mayor declared a curfew for parts of the downtown area and police arrested 197 people in a fifth day of street protests.

Six Americans tell the BBC that there's clearly a problem in Los Angeles - they just don't agree with who's at fault.

Unlike the 1992 riots, protests have mainly been peaceful and been confined to a roughly five-block stretch of downtown LA, a tiny patch in the sprawling city of nearly 4 million people. No one has died. There’s been vandalism and some cars set on fire but no homes or buildings have burned.

Tensions flared in Los Angeles late Monday after Trump escalated military presence in the region against the wishes of California Gov. Gavin Newsom.

The California Governor has sued the U.S. President over the mobilization of the National Guard, calling it “an unmistakable step toward authoritarianism.”

The demonstrations featured more violence and arrests, with some protesters throwing objects at law enforcement, and authorities responding with less-lethal munitions.

National Guard troops with riot shields pushed protesters into the streets, as tear gas was deployed and less-than-lethal rounds exploded in the roadway.

President Donald Trump is moving swiftly to act on his immigration promises with little internal restraint, determined to test the bounds of his executive authority in order to fulfill the promises of his reelection campaign.