You never draw the line alone, you always draw it with others. You talk and seek support, you reach out to activist groups like say 'Anonymous' (in light of gag orders, especially worthwhile as you can reach out to them anonymously ;) ). You try to get as many people as possible to draw that line and together you achieve change. Don't expect any scamming Uncle Tom to provide you with hope and change, it's just a lie, you have to be that hope and change and all the others who join make that hope and change a reality and not some bloody marketing lie.
Patience in this regard is the real virtue, divorce yourself from your own ego in regard to the cause and just keep working it, continuing to seek support from others whilst doing so. You ego is your enemy as it will force you to make mistakes, to focus on your winning now or over inflating the impact of setbacks, simply roll with the punches and keep working the problem but do not do it alone. Only working together can institutionalised corruption be brought down and the more of us who work on those problems the better the solutions.
When tackling government agencies never target the entire agency, just those individuals involved, exposing them personally to the risk of failure (possible civil suit and even criminal prosecution), where changing their mind and backing off is the safer career choice. Don't let those corrupt individuals hide in the background behind their government department, force them out into the open and challenge them directly, expose them to public scrutiny, expose their individual decisions to public review and make them personally liable for their actions.