What should i do?

A few weeks ago, I was walking my dog on my usual route. At one point, I caught sight of someone emerging from the bushes out of the corner of my eye; it turned out to be a woman. I’d estimate her age at between 30 and 40.

A male Labrador walked out of the bushes with an erection, and the woman was holding her phone. I found myself getting aroused by the scene but didn't dare confront her; I just said "Hello."

Since I arrived when I did, I managed to see the woman, and she had presumably been recording. I’m going to keep an eye out for this from now on.