I participate on several FB groups. Upon one group, a foolish woman tells of any photos posted to FB are “the property of the internet” and “FB policy proves it.” FB does not override copyright law and she is wrong.
How this foolish woman made it past the age of four without perishing to some idiotic death of her own doing is a strong argument for parents to eat their defective younglings.
The point-of-parable is plain:
Do the courteous and proper thing and ask permission from the photographer first. And respect being told “no.” And if told “no,” invest your personal time, effort, and funding and take the photos yourself.