(ii) in Chapter IV, after section 22, the following section shall be insemd, namely :--

22-A. Notwithstanding anything contained in sections 21 and 22, no revenue-agent holding a certificate as aforesaid shall be liable to be proceeded against or punished under those sections- (i) for holding any politiual opinion, or expressing it in any form or act not involving physical violence or incitement to or abetment of such violence ;