KATU's news photographer captured a scene in Portland Saturday in which a protester is in front of a Lexus as the driver moves the car forward. What happened?

The police don't know. As of Sunday, neither the pedestrian nor the driver had contacted police, according to spokesman Sergeant Chris Burley.

The moment of contact isn't visible in the video:

WATCH: A driver plowed through protesters in downtown Portland this afternoon. Police say they have not heard from either the driver or victim yet. https://t.co/OBeORYW7Rf pic.twitter.com/18wQ8hb0nH — KATU News (@KATUNews) October 7, 2018

People commenting on KATU's post wonder if the photographer saw something not shown in the video. The reporting seems to take a position.

On Twitter, KATU posts: "A driver plowed through protesters in downtown Portland this afternoon."

A story on KATU.com states: "The driver was in a silver Lexus sedan when he or she drove into the crowd, striking a man and then accelerating down the street."

KATU's Facebook post has "A driver refused to stop for protesters in downtown Portland today and hit at least one person while making a right turn."

Facebook comments -- about 890 so far -- take positions on both sides.

One person wonders what to do when people surround a car and he gets a range of responses, from honking the horn to harsher actions.