Later, the LAPD announced the entire Downtown Los Angeles area has been "declared as an unlawful assembly".
Sunday's protests in Los Angeles, a city of 4 million people, were centred in several blocks of downtown.
Protesters confront police on the 101 Freeway near the metropolitan detention centre of downtown Los Angeles.
One protester then grabbed the 9News camera during Tomasi's live report, which ended so the news crew could get to safety.
Minutes later, the Los Angeles Police Department fired rounds of crowd-control munitions to disperse the protesters, who they said were assembled unlawfully.
Protesters confront a line of US National Guard troops in the metropolitan detention centre of downtown Los Angeles.
Asked if he planned to send US troops to Los Angeles, Trump replied: "We're gonna have troops everywhere. »
