Egyptian security forces firing tear gas have quashed small, scattered demonstrations by Islamist supporters of ousted President Mohammad Mursi who tried to commemorate the anniversary of the killing of hundreds of protesters.After the military overthrew of Mursi last summer amid massive demonstrations against his year-long rule, authorities waged a sweeping crackdown on his Muslim Brotherhood movement and other Islamists, with hundreds killed in street clashes and tens of thousands detained.
The deadliest such incident was exactly a year ago, when security forces dispersed two large pro-Mursi sit-ins in Cairo, setting off clashes and killing hundreds of demonstrators in the worst mass killing in modern Egyptian history.
Authorities have blamed the Brotherhood for a string of attacks on security forces and have branded it a terrorist organisation.
