Instead of banning religions, government should ban recognising religions. That means no weightage should be given to one's religious affiliation. Let people follow whatever religion they want.
There is a necessity to rationalize the society by discouraging all sorts of religious fanatism. Religion should be treated as a psychological passion. All religions are based on myths. So what differece it makes if person lives in Hindu myths or Christian myths.
Religion is something like you belive that Godzilla exists. And then you start fighting Hindu Godzillas, Christian Godzilla and Allah-Godzillah.
Rationalize the society gradually and promote scietific thought. RSS, Christian Missionaries, Mullahs... all these organsations must promote scietific thought first. Then only they should be permitted to function.
I am not against people believing in Gods, but the negative influnce of scriputes should be systematically weakened.