Portland in the US state of Oregon, has been the site of nightly protests for more than three months since the police killing of George Floyd in Minneapolis. Many of them end in vandalism and violence, and hundreds of demonstrators have been arrested by local and federal law enforcement since late May.

In the two hours following the shooting on Saturday, protesters gathered downtown and there was sporadic fighting and vandalism, police stated. Some gave speeches in Lownsdale Square Park before the protest petered out. Ten people were arrested, police said.

The caravan of supporters of Presiden Donald Trump had arrived downtown just as a protest planned for Saturday was getting underway. The chaotic scene came two days after Trump invoked Portland as a liberal city overrun with violence in a speech at the Republican National Convention as part of his “law and order” re-election campaign theme.

The caravan marked the third Saturday in a row that Trump supporters have rallied in the city.

Trump and other speakers at last week’s convention evoked a violent, dystopian future if Democratic presidential hopeful Joe Biden wins in November and pointed to Portland as a cautionary tale for what would be in store for Americans.

The pro-Trump rally’s organizer, who recently coordinated a similar caravan in Boise, Idaho, said in a video posted on Twitter Saturday afternoon that attendees should only carry concealed weapons and the route was being kept secret for safety reasons.

The caravan had gathered earlier in the day at a suburban mall and drove as a group to the heart of Portland. As they arrived in the city, protesters attempted to stop them by standing in the street and blocking bridges.

Videos from the scene showed sporadic fighting, as well as Trump supporters firing paintball pellets at opponents and using bear spray as counter-protesters threw things at the Trump caravan.

The Black Lives Matter demonstrations usually target police buildings and federal buildings. Some protesters have called for reductions in police budgets while the city’s mayor and some in the Black community have decried the violence, saying it’s counterproductive.

Early Saturday morning, fires set outside a police union building that is a frequent site for protests prompted police to declare a riot.

An accelerant was used to ignite a mattress and other debris that was laid against the door of the Portland Police Association building, police said in a statement. At least one dumpster had also been set on fire in the street nearby.

The commotion followed a sit-in in the lobby of the Portland mayor’s condominium building Friday night.-AP

Trump supporters fire paintball pellets at opponents, use bear spray