Nowrooz (Persian New Year) by the entire nation.

religious minorities observe their special holidays too (e.g. Hanukkah, Rosh Hashanah, Christmas, Mehregan, Easter, Chaharshanbesoori)

Religious minorties are well looked after in Ireland.

Because of discrimiation against ethnic, religious, and other minorities in Nevada

One reason was for religious minorities.

It is unclear what is meant by "take advantage of Shiites". Most of the Iranian population is Shiite, so the government certainly uses its population to its advantage. If the question is asking whether Shiites are repressed in Iran, the answer is, "No", since Shiites are the majority in all key government positions. It is non-Shiites in Iran, Sunni and Ahmadi Muslims, Jews, Christians, Zoroastrians, Baha'i, Yazdanis, and other religious minorities, that are harassed in Iran.