Nobody has ever won against Washington, D.C. by scoring a symbolic personal victory against a few minions. Even if you are like McVeigh and willing to accept a certain degree of collateral damage, it has no effect. It turns out that blowing up a Federal building is the political equivalent of putting itching powder in Uncle Sam's shorts.
So if that is the case, sending an outspoken email is a pre-defeated strategy. It is the action of someone who lost before they started, a loser.