In one case, we have a socially decent person (fuck "law abiding", in this context) who is wronged by "justice".
In the other case, we have someone who got away with something wrong, only to be nailed for something else.
One person is a "solid citizen" (placed in quotes because, again, who knows what the fuck that means).
The other is Al Capone.
I don't know if I'm OK with going after Capone for reasons-unrelated-to-the-real-reason (taxes versus criminal conspiracy), but I think it's important to acknowledge the difference.
Something like insider trading is a particularly grey area, because directors trade all the time with more knowledge than the public (how could they not), and leaks of information happen all the time without punishment. I don't know all the details of this particular case, but I'd be skeptical of taking the conviction at face value, given the willingness of some branches of the US government to openly lie to the public, distort the truth, bypass or neuter the judicial branch, and vindictively punish and vilify those who refuse to cooperate in illegality or blow the whistle on their activities.
More generally, whether you take a conviction as a proof of moral turpitude relates to how much faith you have that the justice system in a given country is operating in a just, transparent and fair manner. If you don't have that faith, a criminal conviction means nothing in moral terms.
Otherwise you make a law for Al Capone and you end up prosecuting Aaron Swartz.
No, if "everyone that powerful has done something illegal" then the other is what we call a scape-goat.
Al Capone was in criminal business through and through, not someone who had a legit business and also "had done something illegal", much less something that "everybody that powerful" had also done.
Intent matters too. Catching Al Capone for tax evasion was meant to punish him for his larger serious crimes. Whereas in this situation (if it's as described), the caught the guy for "insider trading" to punish him for something else he did RIGHT.
http://online.wsj.com/articles/SB100014240527487044715045744...
If you don't cooperate with whatever they want you to do they'll get you for something, and then they'll paint you as the scum of the Earth in the media, so nobody pays too much attention to what they did exactly.