Dark humor is the best humor. If you can make a joke about any topic, you can help to overcome dark realities and make important issues stick in people's minds.

There's an old saying that I love: "Nothing captures human interests more than human tragedy."
 
People remember dark humor because it leaves an impact. It doesn't have to make people laugh but they'll definitely react. That's more than will happen if you just tell them something.

Let's give it a try.
Recently, the US had a failed drone strike in Afghanistan.
Where did the children go who were in the area when the bomb hit?
 

Everywhere.