Complex sentence: Australian Opposition Leader Tony Abbott initially welcomed the policy, while Greens leader Christine Milne and several human rights advocate groups opposed it, with demonstrations protesting the policy held in every major Australian city after the announcement.
Split into simpler sentences: Australian Opposition Leader Tony Abbott initially welcomed the policy, while Greens leader Christine Milne and several human rights advocate groups opposed it. Demonstrations protesting the policy were held in every major Australian city after the announcement.