Roger Kingdom is even worse than Allen Johnson. Supposedly he's why they put weights on them, because they'd end up all over the track/infield otherwise. Though his Seoul 1988 was pretty clean by his standards.Here's another perspective.
One could argue that the penalty is built into the race itself: hitting hurdles slows you down; hitting hurdles causes you to lose time. No matter how fast you run hitting hurdles, you always could have run even faster had you not hit any. Although there is credibility to that logic, it doesn’t quite hold up when viewed in the light of other events. A triple jumper, for instance, could scratch by half an inch and jump 54 feet. So what do the officials do? Deduct a half-inch and give him an official marking of 53’ 11½� No, they disqualify the attempt. Same thing in long jump, same thing in shot-put, same thing in discus. A foul’s a foul, a scratch is a scratch, no further discussion necessary. Now I’m not saying that a hurdler should be disqualified for hitting a hurdle, because, although hurdling does have some similarities to certain field events, hurdling is not a field event. What I’m saying is that there does need to be some measures put in place that will give the power hurdlers who just bust right through hurdles a genuine fear of consequences if they continue to hurdle that way.