Especially if they bleed. I honestly wonder how much of the appeal of car and motor bike racing is the anticipation of a crash.
I remember watching when Jules Bianchi had his fatal accident and I remember where I was when I read of Antoine Hubert had his fatal crash and I remember watching Romain Grosjean somehow walk away from an incredibly violent crash. Each one made me seriously consider giving up on the sport, but the racers racing and each crash has led to massive safety improvements.
I hope there is never another fatal or injury accident in motor racing. In F1 there was a long gap between Senna and Bianchi, let's hope the next gap never ends.
Agreed about Mick as well, its always terrible when they don't show replays for a while. But I also think that fact alone contradicts the OP, they won't broadcast a serious crash.
That's true in open wheel racing like F1, but in stock car racing like NASCAR, contact and wrecks are an accepted part of the sport and are definitely a component of the race and strategy.