As an editorial shooter I rarely asked anyone to sign a release, then mostly when I was new and thought there might be subsequent commercial use of some of the images. I gave those baseball players my card from the magazine, letting them know who I was and who I was working for. Now I happily shoot for myself, and don't have to deal with suspicions such as those that the women had. After thirty years I can't recall anyone ever asking to see a release, for models or for property.
It's simple: when you're shooting editorially, for a "fair use" purpose (such as self-promotion, or small-press runs), you don't need a model (human) or property (animals/real estate/identifiable objects owned by others) release. I have a few books on that topic which I've read over the years. I like to keep my bases covered.
The only time you need a property or model release is when you intend to use the images for a purpose other than listed above, and in general, only when the model/property are identifiable. If the person or property you're shooting is not identifiable, you generally don't need a release, which is why you see folks blurred out in shows like COPS (commercial), but NOT often on news shows (editorial).
Also, just so we're clear....
You don't need a property or model release to take an image. If you're legally allowed to be somewhere, and you're not prohibited from taking photographs (usually, there's a sign, or you're on a military base, or some other area where it's clear you shouldn't be taking photographs) you're legally allowed to take photographs. It's simple.
The property/model releases are used to prove that you have permission to use someone's likeness (or the likeness of someone's identifiable property) for commercial purposes.
You don't need a property or model release to post a picture of someone (or their property) on Instagram, make a small press-run of coffee table books for a "small audience" (it's defined by law - the size of the run, and the size of the audience), or to post a picture in a newspaper (editorial use), or to place that image in your portfolio (online or in print) to share with others.
But if you try to, say, sell a picture of a model drinking a nice ice cold bottle of Coke to Coca Cola, you'd better have a model release, because no one's going to touch that image for commercial purposes without an official release from the model.
I think they end up blurring some editorial items due to association laws (let's say you're an innocent bystander by a huge pile of drugs or dead bodies - maybe you don't want to be associated with that, and that's a case you might win in court against a news outlet). Obviously, when children are involved, people are a little more sensitive, because our country is so litigious and on-edge right now. But the law is the law, and residents of the U.S. are afforded fairly open shooting from public property in the United States (even children):
en.wikipedia.org
To sum up: the majority of shooters the majority of the time don't need a model or a property release, and you certainly don't need one to shoot an image - just to use an image for commercial purposes.
In the U.S., when you take a picture, you become the legal copyright holder of that image, regardless of the contents of that image. Period. In fact, if you take a picture of someone, and they find that picture on-line, and try to use it, you (as the photographer) can sue THEM for copyright infringement. The subject has zero rights to the copyright of your work. Having said that, you can always do an exchange: use for use. And that usually comes out in a release.
Cite:
A Digital Photographer's Guide to Model Releases: Making the Best Business Decisions with Your Photos of People, Places and Things: Dan Heller: 9780470228562: Amazon.com: Books