What out-of-control situation did nobody call emergency services about?

My co-worker's story of how he found out he had a heart defect jumps out for me.

He used to ride his bike to work all the time at his old job.

One day, just on his road to work, he drops on the side of the road, fainting.

He was out for an hour or so before he came to. He was

pretty beat up, nothing major but cuts and bruises everywhere. When he came to, no one was around him.

People were just driving by and walking around. No one stopped to help. No one stopped to call an

ambulance. He went to the doctor and got surgery done for an artificial heart valve.

This one was only a few years back, driving along a suburban road one night, and a guy wearing only his undies ran up to our cop car and threw a very large sofa cushion at us.

As we slowed down to find out why he'd thrown said cushion, he'd tried to jump into the back of the car.

We got out and had a chat with the poor guy who told us that he'd used about an eight ball of poor quality

bugger sugar and wanted to get our attention to help him. Kicker was he'd been running around

the suburban streets all crazed for about 30 minutes and nobody thought it was odd enough to call

us. To be fair, it wasn't the nicest area.

I was responding to a disturbance call in a trailer park that turned out to be BS. As I was leaving,

I noticed a giant puddle of blood on the ground near a different trailer. Upon further inspection,

I realized that there was blood all over one of the doors, complete with smeared handprints

and blood dripping off the doorknob. It looked like a frickin' massacre. I started pounding on the door,

and then this junkie comes out and starts yelling at me for waking her up. I ask her if she's hurt,

and she said she wasn't. She then proceeds to go nuts about all the blood. She has no idea where it came from. I followed

the ungodly amount of red stuff to a trailer about a block down where there was a giant party

taking place. I ask the group of guys standing outside where the injured person is and they all go

...