Bob Ellis (left-wing media pundit of some note, known for his grumpy demeanour) has some questions...
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https://independentaustralia.net/life/life-display/the-secrets-of-the-lindt-cafe,7207
We don't know yet whose bullets, or stun grenades, killed
Katrina Dawson. We don't know yet whose weaponry wounded four others. We don't know the others' names.
We don't know why there were so many shots fired; and whether, in the dark, they knew who they were shooting at. We don't know why this has not been revealed.
We don't know why the police forebade the hostages to give any detailed media interviews. We don't know why the prime minister refused them help when two of them begged for it. We don't know why a Muslim cleric was not allowed to talk to the 'terrorist', as has happened in similar situations, hundreds of times, thousands of times across the world.
We don't know much about anything. And we can only surmise an enormous cover-up is taking place.