Disagreed (reasonably politely but persistently with lots of data) with upper management about what became a key technology to Google a year after I left. Got told to shut up about that technology or leave. Chose the latter and made a successful career out of being an expert in that technology. Found out later through my contacts that HR slammed the door behind me.
Is that something like "Quit my job at Google, middle fingers in the air," or what?