You are speaking for yourself from the Netherlands, Unless you want/intend to stir some trouble in Iran, you should watch your words, the name is The Islamic Republic Of Iran and the latest elections showed what the majority of Iranians think and want.
Persians have accepted Islam and the Arabs who brought it to them since its inception 1500 years ago.
So how big an Iranian are you!, Persia was great 3000 years ago, and what you need to understand is that many civilisations preceded it and came after it.
Mesopotamia, Assyria and others made Persia what you feel so proud of, and both were in Arab lands, today Iraq and Syria without talking about The Egyptian Arab civilisation of more than 15 000 years of history.