Where did you get that from? Tony Blair, who was the British Prime Minister and leader of the Labour Party (the socialist party) is Catholic.
Socialism is not anti-Catholic.
Why do Americans persist in the strange view that communism and socialism are basically the same. They are not. Many European countries have had socialist governments.
I think most educated Americans understand the differences between socialism and communism (your statement was a bit of a generalization, if I do say so myself).
Marx is clear on what he thinks about religion:
"Religious suffering is, at one and the same time, the expression of real suffering and a protest against real suffering. Religion is the sigh of the oppressed creature, the heart of a heartless world, and the soul of soulless conditions. It is the opium of the people.
The abolition of religion as the illusory happiness of the people is the demand for their real happiness. To call on them to give up their illusions about their condition is to call on them to give up a condition that requires illusions. The criticism of religion is, therefore, in embryo, the criticism of that vale of tears of which religion is the halo."
Any ideology derived entirely from that of Marx is bound to be somewhat state atheistic (as others pointed out, Blair would probably be better classified as a Democratic-Socialist). Granted, there are small religious communities that managed to get by in communist countries (I have a Muslim friend who used to live in China), but much bigger are the piles of martyrs who stood up for their beliefs and were silenced.
Pope St Pius X is clear on what he thinks about socialism:
The dream of re-shaping society will bring socialism
“But stranger still, alarming and saddening at the same time, are the audacity and frivolity of men who call themselves Catholics and dream of re-shaping society under such conditions, and of establishing on earth, over and beyond the pale of the Catholic Church, ‘the reign of love and justice’ … What are they going to produce? … A mere verbal and chimerical construction in which we shall see, glowing in a jumble, and in seductive confusion, the words Liberty, Justice, Fraternity, Love, Equality, and human exultation, all resting upon an ill-understood human dignity. It will be a tumultuous agitation, sterile for the end proposed, but which will benefit the less Utopian exploiters of the people. Yes, we can truly say that the Sillon, its eyes fixed on a chimera, brings Socialism in its train.” (Apostolic Letter Notre Charge Apostolique “Our Apostolic Mandate”] to the French Bishops, August 25, 1910, condemning the movement Le Sillon)
As is Blessed John Paul the Great:
“Continuing our reflections, … we have to add that the fundamental error of socialism is anthropological in nature. Socialism considers the individual person simply as an element, a molecule within the social organism, so that the good of the individual is completely subordinated to the functioning of the socio-economic mechanism. Socialism likewise maintains that the good of the individual can be realized without reference to his free choice, to the unique and exclusive responsibility which he exercises in the face of good or evil. Man is thus reduced to a series of social relationships, and the concept of the person as the autonomous subject of moral decision disappears, the very subject whose decisions build the social order. From this mistaken conception of the person there arise both a distortion of law, which defines the sphere of the exercise of freedom, and an opposition to private property.” (
Centesimus Annus, n. 13)