Like the now canonical use of the word "hater", it is clear that if someone is "anti-" something, then they must be in the wrong. It's up there with "hard-line".*
Michelle Bachmann's conservative Lutheran church continued the Reformation characterization of the Papacy as "anti-Christ" and therefore was deemed to be "anti-Catholic". Well, if you are Lutheran, you have to be "anti-Catholic" in some sense or you'd be...Catholic.
The cult of niceness makes it very hard to tell the truth. Or even to know what it is anymore. But that's the point.
*Only used in the MSM for conservatives, never for leftists.