Solve This Murder

It was a bombardment of hatred. Sonic hate. They despised everything good about society. Science, art, compassion, talent, innocence, literature, animals, the environment, trust, and decency. I couldn’t let them win. 
Despite all my best efforts I could not find out who they were, where they were, or who they used to do the legwork. I had worked out that they needed proximity to get things done, so they always used local “muscle”, which would always be someone that they believed would draw the least attention. People who everybody would not suspect or who they wouldn’t notice. 
Everybody that they used was a coward, they had to be to do the ‘job’ that they were doing. 
I had no means to defend myself so instead I tried to thwart their efforts in every way that I could. 
I put an ear plug in one ear to sleep to cause pressure so that the damage caused by alternate beating was reduced. It was also the fact that my teeth did not meet in alignment that made a huge difference. If I clenched my teeth together I could feel the vibration, sound vibration. I awoke everyday with my teeth humming, five teeth were loose.
They had made this so that if victims tried to tell anyone that no one would believe them. They had used cliché elements on purpose so that victims were trapped and enslaved in plain sight.
Each day I wished that I could find the cowards that did this. The one that I knew was 350 miles away and the police were supposed to be dealing with him. They were not on the case fast enough. Would hatred and cowardly violence be the way of the world, or justice and civilisation? I had to be brave, just to continue to thwart them in every way that I could until the police caught up.