Complex sentence: In the 1820s and 1830s, denouncements were made of the police force and the crime situation had become so desperate that each district formed "vigilance committees" to help increase the efficiency of the police.
Split into simpler sentences: In the 1820s and 1830s, denouncements were made of the police force. The crime situation had become so desperate that each district formed "vigilance committees" to help increase the efficiency of the police.