Under Rifaat al - Assad Islamic prisoners at the Tadmur prison were massacred , membership in the Muslim Brotherhood became a capital offence .
The government sent a death squad to kill Bitar and Attar 's former wife .
Under Rifaat al - Assad Islamic prisoners at the Tadmur prison were massacred , membership in the Muslim Brotherhood became a capital offence and the government sent a death squad to kill Bitar and Attar 's former wife .