I think scarier things have happened, but this is from recent memory.
My sister and I were driving home one night and we were almost home when we drove by the neighborhood park. And we live in a really safe neighborhood. Like the most serious crime that happens here is a car window broken, but that's really rare.
So we are driving by the park (it's already closed since the sun set) and we see this huge fire near the BBQ area. Like it literally looked like arson. We drove past it and I thought about calling 911, so we u-turned and drove past it again, this time stopping on the curb. We were there for a minute just watching, and out from the park comes this big drunk-looking guy sauntering out, looking straight at our car. My sister was frozen, and I was like GO GO GO, and we sped off. I have no idea what that guy was thinking or what he was up to.
My sister returned the day after and she told me there was trash and beer all over the place.