Sorry Charlie. That is the whole point of peaceful transitions of power in a democracy. As much as I wont like it, if Trump wins he will be my president just as much as to his supporters. if I vote for someone else, and that person loses, it doesnt mean I have no longer have any say in how the government operates or what it does.
And when Trump fucks up... which will happen daily... I will say so. Also my patriotic duty as an American. Tell our leaders off when they do. He wont like it at all as evidenced by his constant attacks at those that speak against him. Unless Trump suspends free speech. Which I cannot discount. So if someone wants to call themselves an American citizen this is a non-issue.