I just sent the good governor a proclamation of my own:

WHEREAS you have seen fit to make a mockery of the true causes of the Civil war with your proclamation declaring it to have been “a four year war between the states for independence” rather than what it was, a war between people and states who believed they had the right to own human beings as chattel property and those that did not; and

WHEREAS my place of residence puts me in the way of frequently visiting the State of Virginia; and

WHEREAS my money can easily be spent elsewhere;

NOW, therefore, I, [Cato the Elder] of Baltimore, Maryland, declare that until such time as this nauseating revisionist proclamation is rescinded, I shall not visit, purchase goods from, or support in any way the Commonwealth of Virginia, and will actively work to encourage others to take similar steps.

You can send McDonnel your own little message (or just copy mine) here.