Iran is predominantly a Muslim majority country with a population of 80 million people. The majority of its population belongs to the Shia sect of Islam but also includes a Sunni minority (5-10%), and a large part of the majority are practicing Muslims who love their religion and religious traditions.
Iran is currently under the rule of an oppressive “religious” dictatorship (similar to your fascist username,“Ban Islam”), and as history has shown, this most usually has the opposite effect. This results in many Iranians to be quite secular in their private lives, and the expats who fled this dictatorship can often incorrectly blame religion for their valid discontentment and try to detach themselves with any trace of its memory. With that said, there are plenty of Iranians outside Iran that are quite fond of Islam and Islamic Persian history and arts.
As for the anti-Arab point, this would require a question all on its own, as it would need a proper detailed answer. Suffice it to say Arabs tend to be the scapegoats in the Muslim world among almost all non-Arabs.
As for Israel point, hatred of Zionism has always existed in Iran and in 100% of the region. Just because we had a Western puppet dictator that was cozy with Israel does not mean his views matched the views of the majority. In fact, as we know, he was quite hated. Even when secularism was at its zenith, anti-Zionism views persisted, which can be seen in the World Cup game between Israel and Iran on an year which I forgot where when Israel lost, Iranian crowds erupted in anti-Zionist chants. This was before the Islamic Revolution.
Fact of the matter is Israel will always be a pariah state in the region because its heavily European-imported population/culture is artificial to the region, and the state was formed out of the stealing of land and ethnic cleansing of another people.
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Yes, I do despise the Iranian theocracy - the ascendancy of the legal scholars, mullahs, is a very recent post-modern idea. Anyone who has studied Iranian history from 800 AD - 1979 will agree Islam had been an immense positive for the nation. Zoroastrianism (with its priestly caste) and the Sassanid Empire had become heavily corrupted and despotic, and both were in decline.
Islam is not a foreign religion. Iranians have been significant contributors to Sunni Islam with the largest school of law being founded by Imam Abu Hanifa (Persian) and the most notable collector of hadith being Imam Bukhari (Persian), etc. Not to mention Salman al-Farsi, a disciple of the Prophet Muhammad, who the Prophet said is "of my family" was Persian. Historically, the Abbasid Caliphate adopted their administration system from the [Persian] Sassanid Dynasty, etc.
Islam has acted as a huge uniting factor for a very diverse region, which was previously divided over far more tribal identities, so - yes - I do believe it has been a positive force for the region in addition to triggering various 'golden ages' of culture, arts, mathematics, and other fields.
*Keep in mind this is all from the lens of pre-1979. I think after 1979, the state of the quality and usage of religion in Iran has only gone downhill.
And yes it is totalitarian to ban people from praying, fasting, giving a percentage of their wealth to the needy annually, believing in One God, etc.