Your answer implies an implicit encouragement . But , in this era , usury is declared halal by the banker-financed modernist scholars . So , if a Tablig Jamat guy goes to an modernist scholar, he will be misguided. Moreover, such an implicit approach puts the burden on the activist himself. The better approach is open discussion on the danger of usury by the Islamic movement. The movement needs to provide explicit encouragement for the members against usury based lifestyle. If it takes a hush-hush attitude , then I suspect the subversion of the movement by the paid agents controlled by the ILLuminati bankers.