Wild scene from the Tour de France on Tuesday ... when all the riders staged a 1-minute protest to demand safer racing conditions.
The event has been laden with gnarly crashes over the past 3 days ... including a massive pileup caused by a spectator's cardboard sign on Saturday.
Yet another crash went down during Stage 3 on Monday ... and riders believe it could have been avoided if race organizers would have listened to their concerns regarding the curvy and narrow finale.
The riders decided to show just how pissed they are about the dangerous racing conditions with the strike .