Did Buddhism oppose Vedic religion?

At the time of Tathagat Buddha, Hindu religion in its current form did not exist. However, there were Vedic teachings. These teachings were based on blind belief in the authority of the Vedas. There were many different schools of philosophy *opposing* Vedic teaching, e.g. Akriyavada, Niyativada (determinism), Ucchedavada etc. As far as I know, the Buddha opposed Vedic religion. He opened a strong camp against it and freed people from the exploitative teachings of Veda. He expounded equality as opposed to the Vedic teachings which discriminated between different classes. Is it true that Buddhism (since time of Buddha) opposed Vedic (and later Brahminical) religion?