Pepper would like to suggest that their secret keeper not go to battles. To avoid risk of death and all.
In the realms of public support/dissent/getting information out he suggests people who are actually good with words (not him) start using parody - writing things as if they were from the people in power but obvious conspiracy theories to explain everything from why the DMLE and Minister would try to take over the Ministry in the first place to why the Death Eaters have suddenly disappeared (beaten into submission by the even more evil foreign terrorists who use them as cannon fodder, clearly....)