The social liberals are the 3rd political group who used it, i'd say at least as efficiently as the far right (first group that used internet to shift the Overton window) and more efficiently than the libertarian/fiscal liberals (second group).
But as social liberals are far more numerous than the far right, the impact is magnified. I find it hypocrite that members of the first two group trying to open the overton window are calling them out on this.
