What's the saddest music video ever ?

[Floogal]

I've always thought the song Happier by Marshmallo and Bastille was quite upbeat and fun when hearing it on the radio. The other day when watching music videos on YouTube it came up. So heartbreaking. A lonely isolated girl is given a puppy by her dad. The girl and the dog become close. Gradually the dog ages and becomes sick until it is put down. The most upsetting thing in the video is the girl sobbing at the vets while the dog puts the paw in her hand to cheer her up.
Thankfully the video has a happy ending, which I won't spoil. But check it out.
What music videos do you find sad?

Frozen by Within Temptation. The woman is beaten by her husband and poisons him when she finds out he's abusing their daughter, and then she's writing a letter to her daughter while waiting to be executed.