Ask HN: Why is war news so ridiculously biased?

It's hard to believe. A month or so ago, a dam in US was overflowing a little, and it was a world news.

A few days ago US bombs the biggest dam in Syria, disabling it's control rooms and starting a countdown to a catastrophe and nobody gives a damn. Also the manager of the dam + his team were reportedly given 4 hours to go inspect the damage, only to be murdered by the US drone during that window.

Also, the bombs hit just meters from the dam's wall. Error, or a failure might have perhaps killed hundreds of thousands of people.