Question:

Is talking about the leadership of Imam Ali (a.) at the present time a good thing according to the founder of the Iranian Republic (Al-Khumaini)?

Answer:
Ruhullah Al-Khumaini writes:

امروز سر ولايت امير المومنين اختلاف كردن خيانت به اسلام است امروز اين حرفها را طرح نكنيد

“Today to disagree because of the leadership of the Commander of the Faithful is a betrayal to Islam. Today you should not say a word about it!” [Sahifeh, vol. 8 page 481]