I don't feel bad.
I've been called much worse. Being called a honkie and cracker and white devil doesn't bother me, either.
I am secure in knowing myself and my own manhood, so "leftist" isn't a pejorative that leaves a sting.
I have known leftists. They are, by and large, paper tigers. They are brave in a mob and cowards by themselves. Their visions of grandeur are realized only when they have managed to secure repressive power and are able to subjugate an unarmed and dissolute mass of people. In that they have something in common with the old plantation slavers. They will compensate for their own severe inadequacies by lording over a helpless population. When confronted by an enraged adversary, no matter its size, they become scared and either lash out wildly or run for the hills.
The poster wouldn't know a leftist if the leftist came up and introduced himself, with fliers and a lifesize cutout of Marx, Mao or Lenin.
It was from a long-time FReeper. Oh well, LOL.