Paul Manafort was jailed for continuing to try to tamper with witnesses after his indictment (he's yet to be sentenced for that), Roger Stone has been twice rebuked by the same judge for defying a gag order, and generally, legal decorum, and now Chelsea Manning is facing contempt proceedings for defying a grand jury subpoena. (Politico) What is it about extremely egotistical people that prompts them to put themselves in legal peril on idiotic grounds?

One should not be fooled by Manning's self-righteous claim that this is based on "principle". It's based on stupidity and arrogance. Grand jury proceedings are secret to protect the innocent and the justice system. Her posturing benefits neither.
_________________________
A well reasoned argument is like a diamond: impervious to corruption and crystal clear - and infinitely rarer.

Here, as elsewhere, people are outraged at what feels like a rigged game -- an economy that won't respond, a democracy that won't listen, and a financial sector that holds all the cards. - Robert Reich