Nothing happens when running the downloader tool

[selplacei]

Issue: when running the downloader tool (the binary file is actually named police-brutality), no videos are downloaded. The videos directory and the files downloader.log and name_mapping.csv are created; the first two are empty, and the contents of the latter are exactly this: name,link,unique_video_number. The tool exits with code 0, and nothing appears in the output.

Steps to reproduce:
git clone https://github.com/2020PB/police-brutality
cd police-brutality/tools/downloader
make build
./police-brutality start

Running on Arch Linux, Go version 1.14.4 linux/amd64, youtube-dl version 2020.06.06.

Edit: this probably doesn't affect anything, but I ran the data builder script just in case, and it didn't change this behavior.