Complex sentence: Amelia Boynton Robinson, who had helped organize the march as well as marching in it, was beaten unconscious; a picture of her lying on Edmund Pettus Bridge appeared on the front page of newspapers and news magazines around the world.
Split into simpler sentences: Amelia Boynton Robinson, who had helped organize the march as well as marching in it, was beaten unconscious. A photograph of her lying on the road of the Edmund Pettus Bridge appeared on the front page of newspapers and news magazines around the world.