Alexander Rusero, a former senior politics lecturer at Harare Polytechnic college, says police and political parties must thwart violence at opposition rallies. 
Alexander Rusero yemwe ndi mphuzitsi wamkulu wa ndale wakale pa sukulu yaukachenjede ya Harare Polytechnic, wati okhwimitsa chitetezo komanso zipani zandale  zikuyenera kuthetsa ziwawa pamisonkhano yaotsutsa