The Platonist Plague

Everyone knows the main flaw of the Platonist philosophy (and no, it isn't totalitarian utopianism): the belief that cocepts and ideas exist independently of the human mind. This means that, in essence, non-material things have a material existence somewhere outside the brain. The brain (or reason, to be precise) is only a medium which allows us to communicate with the world of ideas and draw knowledge from it. But this knowledge is not created by the mind, it is independent of it. Essentially Platonism is crazy, it is a mystical tradition which was picked up by Neo-Platonists such as St. Augustine and then passed on to through Hegel to Marx - the greatest spreader of such evil anti-human theology as communism and socialism in our world today.
Now it is true that I was heavily influenced by Plato myself in my early years of philosophical study and I still catch myself making some silly Platonic statements at times. Plato introduced me to the crucial concept of human nature and nature of other objects in general. His writings in this regard and rather useful - we can tell how and why his great pupil Aristotle (whose views are nearly a 180 degree reverse of Plato's) created his own ideas on nature. The introduction of the concept of nature (human nature and other things' natures) and its study of it is perhaps the single greatest contribution of ancient Greek philosophy.
Today, however, I see Platonism is exercising a very harmful effect on the minds of many people by fostering collectivism. When I opened the Polish news portal onet.pl I saw a number of headlines which were quotes from speeches by Polish politicians and other dignitaries pertaining to the holiday we are celebrating today. Here are the rough translations of the quotes:
1. President Bronisław Komorowski: "the Polish state is going through a test today"
2. Prime Minister Donald Tusk: "our National pride demands that the museum [General Pilsudski Museum] be created"
3. Archbishop Andrzej Dzięga: "the Nation has a right to ask questions about the Smolensk Catastrophe"
Now on the face of it these statements seem normal, but let's look at them from an individualist perspective. All these men above are naming fictional entities, none of which actually exist, and using personification in order to give these entities the appearance of intelligent acting beings. Thus 'National pride', 'the Polish state', and 'the Nation' have somehow become existing, speaking, acting things. They seem to have the right to 'demand' things from us! This is a deeply Platonic confusion which is now being applied by politicians, who probably actually believe in the truth of their words, in order to accomplish their goals.
But, NEWSFLASH GUYS, these 'beings' are not actually beings! They are only concepts which exist in your head! Continuing to personify such concepts and perhaps conversing with them (the men quoted above seem to know what the abstract concepts want) seems to me to be a sign of acute schizofrenia. I can no more access the knowledge of 'nation' than I can access other Platonic concepts like 'the good' or 'the beautiful'. The nation doesn't want anything because it doesn't have a mind to comprehend desire or a mouth to articulate it.
Or maybe someone can explain to me how can any such statements be in any way rational?

Baroness Margaret Thatcher, probably the greatest head-of-state in the 20th Century (at least in terms of ideological awareness) once said that "There is no such thing as society. There are individual men and women..." She understood that 'society' was a word now treated in a Platonic way. Rather than meaning the group of people occupying a certain area and sharing a community, 'society' became a living being, an entity with its own needs and goals. This is, of course, rather ridiculous. But such is the language of all mystics.