Complex sentence: One of these unions started a labor strike against the American United Fruit Company in 1928 demanding better working conditions, which was met with force of arms by conservative president Miguel Abadía Méndez, in an event now known as the Banana massacre.
Split into simpler sentences: One of these unions started a labor strike against the American United Fruit Company in 1928 demanding better working conditions. Conservative president Miguel Abadía Méndez used military force to stop the protesters, in an event now known as the Banana massacre.