Once they broadcast the video on internet, it became public.

With a public entrance that can me monitored 24/7… Wouldn’t surprise me if there was an open ip cam somewhere near there n e ways???

That's not what being a private or public event means.

Everything is on internet it became public

If it was a private event on private land then those at fault were those taking original photos at the private event, and broadcasting them publicly. If they’re in the public domain it’s more of a copyright issue than a privacy one and if those images have been modified/used for literary and artistic purposes then they can fall under parody, criticism and news reporting fair dealing copyright.