Roughly half of the nearly 14,000 complaints brought against Houston police officers in the past six years have been upheld by the department's Internal Affairs Division, covering allegations ranging from misconduct or wrecking a police unit to breaking the law or lying to supervisors.

Over the past six years, an average of 2,300 complaints have been lodged annually against Houston police officers, brought either by their supervisors or residents. That equates to about six complaints per day.

A Houston Chronicle examination of HPD's internal affairs data provides a rare look into an issue concerning many residents in light of the March beating of Chad Holley, a 15-year-old African-American fleeing police after a burglary. After surveillance video of Holley's violent arrest surfaced, Chief Charles McClelland ordered an internal affairs inquiry and later disciplined 12 officers accused of being involved in the beating, firing seven of them.