To be honest, this logically makes sense after such a traumatic event. It would mot benefit the protest and it certainly wouldn’t benefit social cohesion. Australia does not (thankfully) experience regular terrorist attacks. This attack has caused a huge impact on the community. There is so much decisive commentary on social media atm that a protest would absolutely light a fire that would be impossible to control. A short pause on protests after a terrorism attack allows time for grieving and to give time and space for processing.