This kinda creeped me out when it happened - a few years ago my friend and I were out really late on Halloween night, and we had to walk to a certain park near my neighborhood because it's where our ride home was waiting. The area we were in is kind of unsettling to be in after dark because there are hardly any street lights and it's always desolate, so we were rushing a bit to get to where we needed to be. As we got to the opening of the park we saw a man sitting on one of the swings in a hockey mask. He was swinging back and forth a bit, throwing fireworks onto the ground for some reason. We didn't think anything of it and we kept walking but then he got up and sprinted toward us, so we moved and ran ahead of him. He just kept running and then from around the corner you could see lights flashing and a police car drove up. Idk if that had anything to do with the guy but it was a weird experience, I didn't know what was he was gonna do when he ran toward us like that.