You were in a private area in the city, you were taking a shortcut through there to walk home from work or school when suddenly you saw a guy wearing a frown mask, yellow hoodie, denim jeans and dark grey gloves. He was sneaking around, holding a camera. You notice he was one of Slenderman's proxies. He was stalking someone through the window while recording them with his camera.

WHAT SHALL YOU DO IN THIS SITUATION?