Like a moment that seemed insignificant and unimportant at the time, but looking back was in fact a pivotal moment in pushing you towards radicalization.
For me probably being introduced to Guitar Hero at my friend's house in like summer 2007. At the time it was just another day, but looking back I ended up falling in love with those games, I ended up being introduced to The Ramones and even more importantly the Dead Kennedys through them, which caused me to get into punk music and resulted in me adopting very critical attitudes towards larger American society, attitudes which later grew into anarchism and then Marxism
Laugh all you want but I genuinely think Disney's The Hunchback of Notre Dame planted some seeds in my young mind. Like, the bad guy is a religious conservative who is obsessed with hunting down immigrants and minorities, and burns shit down and violates civil rights to do satisfy his obsession (which is driven by sexual pathology). Generic Hero Guy defects from the military over it and leads a popular uprising, and the bad guy is dragged down to hell. I'm not saying it's good, but I am saying that you couldn't make that movie post-9/11 because it would have been a call to action to overthrow the US government.