Is it bad that I laugh at death sometimes?

This all happened a couple of years ago but it was recently brought up when talking to my mum and I was wondering what you guys think about it.

I was sitting in the car with my mum when the news came on. It said some mourners had been attacked by a group of men with machetes. I laughed. And laughed. And laughed. I thought it was hilarious. But, it so totally wasn't.

I mean it was kind of ... ironic? Is that the right word?

Is that bad that I laugh at death?

Do you laugh at death sometimes?

Is it something normal to do?