Complex sentence: Meier then stated that 3-8 officers surrounded McDuffie, pulled off his helmet, and proceeded to beat him with nightsticks, with Marrero striking him at least twice; this, however clashed with Hanlon's testimony, which stated Marrero struck McDuffie with a flashlight.
Split into simpler sentences: Meier then stated that 3-8 officers surrounded McDuffie, pulled off his helmet, and proceeded to beat him with nightsticks, with Marrero striking him at least two times. Yet this testimony clashed with Hanlon's testimony, which stated Marrero struck McDuffie with a flashlight.