Complex sentence: By Wednesday, July 25, it was clear that authorities would not refrain from challenging crowds, Police attempted to disperse crowds wherever they appeared, but the bands of people seemed to disappear and reappear at random, making order very difficult to maintain.
Split into simpler sentences: By Wednesday, July 25, it was clear that authorities would not refrain from challenging crowds. The police attempted to disperse crowds wherever they appeared, but the bands of people seemed to disappear and reappear at random, making order very difficult to maintain.