In spiritual and theological terms, the Catholic Mass is a re-enactment of the Last Supper — which I trust also appears in your Protestant Bible, no matter the denomination. Similarly, the details of Catholic doctrine and teachings are grounded in specific passages of scripture. That Protestants interpret such passages differently does not make Catholics or Protestants into pagans.
Modern Catholic teaching regards Protestants as errant on specific points of doctrine but as Christians nonetheless and due good will from Catholics as fellow believers in Christ. As a Catholic, I have known many Protestants of admirable faith and virtue and have attended Protestant services that fully manifested the spirit of Christianity. On the whole, I think it unlikely that Christ would endorse his followers being hostile and condemnatory toward each other based on reasonably disputable points of doctrine.
I totally agree.
Thank you.