To some definitely. Thankfully, it wasn't to Tommie Harris. But plenty of "good guys" are trying to do it: Matthews, Reggie White
When I played, just to complete the circle Harlan started, I would have happily hit you hard enough to knock you out for a couple plays. But I wasn't looking for an injury to cause. You would have had to make it very personal to get that response. One kid did this, but I never got the chance.