US says 1,000 'rioters' surrounded federal building, attacked officers

US says 1,000 'rioters' surrounded federal building, attacked officers Two people were arrested after assaulting federal law enforcement officers as a large crowd surrounded the Royal Federal Building, the US Department of Homeland Security said on Sunday. The agency said a group of 1,000 rioters surrounded the Royal Federal Building in Los Angeles. Two officers were struck with cement blocks and were receiving medical care, according to the statement.