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.

A cloud of uncertainty is hanging over Los Angeles, where questions remain over the role that Marines and National Guard troops will play after being called in by President Donald Trump amid protests over immigration raids in the city.

Anti-ICE protests continue in Los Angeles after the National Guard was deployed following immigration enforcement actions.

From Seattle and Austin to Chicago and Washington, D.C., marchers have chanted slogans, carried signs against ICE and snarled traffic through downtown avenues and outside federal offices.

At a peaceful vigil in downtown Los Angeles, interfaith community leaders came together for prayer, support and healing.

President Donald Trump’s deployment of military troops to California is forcing Democrats back onto politically perilous turf, as they look for ways to condemn Trump’s actions without being drawn into a broad debate over immigration or tying themselves to the chaotic scenes emerging from Los Angeles.

White House "border czar" Tom Homan said that protests in Los Angeles are complicating immigration raids, making them more "difficult" and more "dangerous."

California officials insisted they could maintain order and blamed federal immigration raids and military deployments for raising tensions, as President Trump defended his decision to send troops to Los Angeles after protests over immigration turned violent.