Icarus
A documentary about an amateur cyclist doping, which then turned into a geopolitical thriller about Russian state-sponsored doping schemes.
I didn't realize how common doping was in sports. Anonymous surveys from WADA (World Anti Doping Association) said 50% of athletes used PEDs, but only 1% got caught.
Not long after that, YouTube started recommending videos about steroids in bodybuilding and fitness scenes.
Every year, I feel like the curtain concealing reality is lifted a bit more before my eyes.