No, I don't think you were wrong that it could have been a radicalizing event. It very well could have bee. It wasn't because there is no infrastructure or organization into which rage can be channeled. The Dems are there to stop that sort of thing, especially when they are in power. There is no broader left movement and the big tent orgs are largely ineffectual and aren't willing to do anything other than lobby Congress. Back in the day, you would go down to your neighborhood bar/pub, get everyone drunk and riled up, and then drag the railroad boss out of bed and beat the shit out of him. Now there is no where for that rage to actually go other than the Internet, which is inherently alienating.