Do you believe that ALL Shi'a believe Ali (RA) to be an incarnate of God? Is that not a non sequitur argument?
Call me what you wish, but don't forget that in our day today (not a historical fact, but a modern-day fact)
more than 60,000 Muslims in Syria were slaughtered under this issue. So trying to get to the bottom of it is not hypocrisy. But you're entitled of your own opinion.
And regarding you question, any "Muslim" (Shia, Sufi or what have you) who calls upon creations of Allah Almighty for blessings, aid, protection, help, strength and so on is an idol worshiper. So whether it is a person, a grave, or anything, that person has become an idol worshiper. Otherwise, the following Noble Verse has no meaning nor value:
9:31 اتخذوا احبارهم ورهبانهم اربابا من دون الله والمسيح ابن مريم وماامروا الا ليعبدوا الها واحدا لااله الا هو سبحانه عما يشركون
[009:031] They take their priests and their anchorites to be their lords in derogation of God, and (they take as their Lord) Christ the son of Mary; yet they were commanded to worship but One God: there is no god but He. Praise and glory to Him: (Far is He) from having the partners they associate (with Him).
Arabic (from right to left):In fact, Wahabism (a strict Muslim Sunni sect) was born in Saudi Arabia, because of the grave worship by many. They'd go to graves and start seeking blessings, and help, and spiritual aid from the graves. The Shias are even far worse! See their videos when they go to Hussein's grave. It's disgusting!! This is not the Islam that I follow. Even Prophet Muhammad's grave itself isn't anything holy to me. The Prophet himself further said:
Allah Almighty would rather have the entire Kaaba (the black cubic building in Mecca) be demolished than to have a single drop of blood be shed from a Muslim.
And in another Hadith, he said:
لا تهدمن الكعبة مئة مرة اهون عند الله من موت رجل مسلم
Let the Kaaba be demolished 100 times, is still easier to Allah Almighty than killing a Believer.So much for polytheism polluting Islam.
Take care,
Osama Abdallah