Answer:
I would describe the tone as moody and upsetting or scary. You can use different adjectives if you'd like. I'd like to say that the artist was trying to tell you that it was an intense and serious time.
Step-by-step explanation:
Photos took a good while to be taken back in this time, but not only that, there was an extremely deadly pandemic going around, and considering there was barely any medication, it could be scary. The tone is what the author/artist wants you to feel. They want you to feel emotion.