They weren't a good thing in the trenches in world war 1. They were the casue of trench fever, which plagued the troops with headaches, fevers and muscle pain. They would also get into clothes and cause the soldiers to itch constantly. They definitely aren't a good thing.
The best answer for this statement would be:
Police Force
<span>The character and training of the police force that we know today, derived from a municipal police officers that after the civil war, had incorporated their character and training to the police force til’ the present.</span>
Answer: Police brutality, I think
Explanation: