This was a question that I really tried to answer. How does one recognize a modernist heresy? I read Pius X encyclical on modernism but still found it difficult to apply it. It is now 100 years later and the error must be still the same. I work with someone who attends SSPX masses and the charge of Modernism is applied often to those not connected to the SSPX.
I am not sure where I heard it but someone gave a definition for Modernism that brought all things together for me.
Modernism is denial of the supernatural
Any view,ideology,practice etc. can be examined through that lens.
stjulie
From the Catholic encyclopedia
A remodelling, a renewal according to the ideas of the twentieth century – such is the longing that possesses the modernists. “The avowed modernists”, says M. Loisy, “form a fairly definite group of thinking men united in the common desire to adapt Catholicism to the intellectual, moral and social needs of today” (op. cit., p. 13). “Our religious attitude”, as “Il programma dei modernisti” states (p. 5, note l), “is ruled by the single wish to be one with Christians and Catholics who live in harmony with the spirit of the age”. The spirit of this plan of reform may be summarized under the following heads:
** * A spirit of complete emancipation, tending to weaken ecclesiastical authority; the emancipation of science, which must traverse every field of investigation without fear of conflict with the Church; the emancipation of the State, which should never be hampered by religious authority; the emancipation of the private conscience whose inspirations must not be overridden by papal definitions or anathemas; the emancipation of the universal conscience, with which the Church should be ever in agreement;
* A spirit of movement and change, with an inclination to a sweeping form of evolution such as abhors anything fixed and stationary;
* A spirit of reconciliation among all men through the feelings of the heart. Many and varied also are the modernist dreams of an understanding between the different Christian religions, nay, even between religion and a species of atheism, and all on a basis of agreement that must be superior to mere doctrinal differences. **
Such are the fundamental tendencies. As such, they seek to explain, justify, and strengthen themselves in an error, to which therefore one might give the name of “essential” modernism.** What is this error? It is nothing less than the perversion of dogma.** Manifold are the degrees and shades of modernist doctrine on the question of our relations with God.** But no real modernist keeps the Catholic notions of dogma intact**. Are you doubtful as to whether a writer or a book is modernist in the formal sense of the word? Verify every statement about dogma; examine his treatment of its origin, its nature, its sense, its authority. You will know whether you are dealing with a veritable modernist or not, according to the way in which the Catholic conception of dogma is travestied or respected. Dogma and supernatural knowledge are correlative terms; one implies the other as the action implies its object.** In this way then we may define modernism as “the critique of our supernatural knowledge according to the false postulates of contemporary philosophy”.**
I think that by reading this you can pretty clearly see where the term modernist can be applied today. Yes it is still around, still ugly and still perverting the dogma and doctrines of the Church.
Hope this helps.