Well GS-11, maybe you are a renegade. Sometimes speaking up is rogue behaviour (if you're challenging the status quo fundamentally). Definition of rogue: "no longer obedient, belonging, or accepted and hence not controllable or answerable; deviating, renegade."
Andrew--a new leader can sometimes be viewed as rogue by those who they challenge. Speaking up is often about challenging the status quo--to some degree or another. Emerging leaders often challenge the status quo, because they seek to improve things. How can one affect change if they are completely obedient, controlled and answerable to the status quo?
GS-11, are you loyal to your bosses, your department, the government as a whole, citizens, or to some moral ideal? Chances are, you can't be loyal to all of these, as there is bound to be discrepancy between the values and goals within each of those subsets. Therefore, if you speak up for something you believe in, and what you're saying fundamentally challenges the culture or process, then you're a rogue in somebody's books. People aren't always going to accept what you say.
For example, if you're speaking up for transparency and open government, and you're doing it frequently, that could be seen as subservient behaviour to those individuals who might stand to lose control or who'll need to change their modus operandi as we move towards gov20. In speaking up, you might be helping push change towards a higher ideal. So, you'll become a leader, but you'll be a little bit rogue, too.
Key--find other people who are speaking up about the same things. Support one another.