Central Asian governments have spent years engaged in high-profile efforts to repress membership of the radical Islamic group Hizb ut-Tahrir. Some observers are warning that harsh repression could prompt Hizb ut-Tahrir's members to take up arms -- they also suggest that young members compose the group's hard core. PRAGUE, July 28, 2006 (RFE/RL) -- It is virtually impossible to estimate the size or composition of Hizb ut-Tahrir's membership in Central Asia. The movement is banned in most places. But some observers say anecdotal evidence suggests the group's core of younger members is growing.