Times have changed with smartphones and videos on public platforms. When I first started driving in the late sixties I had been listening to police calls on tunable monitors for a number of years since I was a young kid, I'm retired now from a large daily where I was an editor.
I had my own dark room at age 16 and could make up black and white 8x10s that could be used by the local newspapers as soon as I got the print to them.
They weren't looking just for the picture, pix worth a lot more if you have the story too and I always did, had all the details of what happened, talked to witnesses, talked to the cops who were more cooperative with someone who actually was affiliated as a stringer with a paper, with credentials, if I had a cop in the picture which of course, I always did, I spelled their name right in the paper. I would get the phone number of the cop or fire chief who was handling the report.
There were rules to follow, protocols, and yes, I got paid.
Bottom line, you deal right with the newspaper or the the TV station directly, only sell them first rights for their affiliates use only
Just to add to follow up on some of the comments here, real professional news photographers video or still get the photos or video long before anyone knows they're there. I always did that.
I would stick my credentials in my top pocket stand with a crowd with a long lens and get everything I need photo-wise, when I was sure I had it then I showed up and was seen.. then I talked to the cops and witnesses.
You never knew when there was going to be some yahoo wannabe stomping all over shell casings and arguing with the cops about their first amendment rights LOL.