Complex sentence: The group of about 50 threw stones and bottles at her; authorities defended her, and one officer was injured, was Machado evacuated from the area by a police motorbike.
Split into simpler sentences: The group of about 50 began throwing objects such as stones and bottles at her. Authorities then began to defend Machado which resulted in one officer being injured and Machado being evacuated from the area by a police motorbike.