Edmund Burke said "All that is needed for evil to triumph is for good men to do nothing." Or something like that. The man who caught Sandusky in the showers with the boy could have physically beat the turds out of Sandusky. He could have called the police right there - surely he had a cell phone.
As for Sandusky, like most pedophiles, his feelings of righteousness in what he did says it all: he feels no shame, no remorse.
While not all jocks are rapists, no not even most - there is a testosterone laden mentality in the sports world that fuels sexual aggression and predation, and a cohesiveness that makes them stand up for each other. But it is also seen in gangs - so perhaps it is that certain types of males bond, egg each other on, and thus we find people like Sandusky being protected.
If he gets off after appeal I should hope someone would hunt him down and do the right thing, because Mr. Sandusky himself will never do the right thing.