Simplify the following text for a Grade 5 native English-speaking person.
Original: When the rioters entered the Bastille , they collected cartridges and gunpowder for their weapons and then freed the seven prisoners ( which they had to do by breaking down the doors , since the keys had already been taken off and paraded through the streets ) .
Simplified: The crowd took the weapons , gunpowder , and freed the seven prisoners . They had to break down the doors because the keys had already been taken and shown in the streets .