Complex sentence: Over the next 10 minutes, Harambe became increasingly "agitated and disorientated" by the screams of onlookers, and dragged the child through the water, occasionally propping him up when he sat, or pushing him down when he stood.
Split into simpler sentences: Over the next 10 minutes, Harambe became increasingly "agitated and disorientated" by the screams of onlookers. He dragged the child through the water, occasionally propping him up when he sat, or pushing him down when he stood.