Why are Hindus so silenced by the anti-imperialist left while they are so precious and dedicated to the Native Rights cause ?
First, this is no paradox : when you really serve Native Rights, the left automatically hates you, vilifies you, and wants your destruction.

Second, Hindus are upright pagans, not sandwich-men promoting the Bible, the Quran or the Holy Communist Manifesto like docile indigenous groups do. Self-respect with no promotion of ethnophobic ideologies is a serious problem to the antiracial groomers of the indigenous left.

Third, most Hindus have interestingly a very civilizational conception of Native Rights.
The dissident left hates this, because the left supports and organizes indigenism only to keep control of infantilized indigenous puppets criticizing the West for not being enough leftist.

The anti-imperialist left is utterly incompatible with any aspiration for native pride, spiritual autonomy, civilizational uprise, and sacred ancestral property.
Hindus will always be incompatible with the left, for they can't be its puppets.