Is Indian culture simply synonymous to Hindu culture?

This is an interesting battle. Indian culture thrives in tandem with its religion, and the idea of a Hindu hegemony, or any hierarchy at that, threatens the very bedrock of its democracy. Hinduism being a predominantly practiced religion in India naturally gives it a greater say in dictating Indian culture, however that does not necessarily allow it to assume a sense of superiority in comparison to other religions or give it the ability to threaten other communities.