Brahmins never ruled India. You read history of India . There was not a signle brahmin emperor. India was ruled by OBCs, Muslims and British.
Who created caste system? Brahmin never created it. Manu ( an OBC king) created it. All powers were given to OBC kings by the caste system. Brahmins were sujected to slavery and subjugation by OBC kings. Brahmin were not allowed to particcipate in economy. Even Sudras were allowed to earn money because they were free to work as labours. Brahmins were fornced to live in temples and their life was totally dependent on donations and begging. Caste system created by OBCs wanted brahmins to beg and millions of brahmins were starved to death. There were no hardships were enforced on any other caste but brahmins. Brahmins were not allowed to eat food of their choice. They were forced to observe fast and developed malnutrition. Brahmins were not allowed to keep money. They were forced to live like beggers.
You read the books written by SC/STs. Ramayan was written by Valmik (SC/ST) and Mahabharat was written by Vyas (SC/ST). Ran, Krishan and Vishnu belong to OBC caste and Shiva belong to Sudra caste. Brahma is the only Brahmin God.
There are millions of temples of OBS and Sudra gods but there is only one temple for brahmin god in this world. This itself shows kind of subjugation brahmins have been subjected to.
What happened in Ramayan. An OBC king (Ram) killed a brahmin (Ravan). They called brahmins by a derogatory name called Asuras and killed brahmins.
Whole history of india is filled with unprecendented crimes against brahmins.
Now it is right time brahmin should demand 15% reservation.