catholics who grew up in the Evangelical hotspots complain that their classmates more or less called them pagans, since some of the baptists/weirder protestants consider the existence of sainst to be idolatry, and thus making catholics savage pagans.

I have personally experienced this, and can vouch. The classmates in question were a mix of Baptists, Methodists, and members of some weird Church of Christ youth cult. Oddly enough, we had Lutherans and Seventh Day Adventists around, and the aforementioned evangelicals generally left them alone.

Edit: To add, this wasn't even in some evangelical hotspot like the frigging Bible Belt. Just a rural area in the Midwest.