diabolical can also refer to "unpleasant or bad" and also if you want to get technical refer to how the sound can remind people of death and then refer to the commandment of "thou shalt not kill" Exodus 20
During his midnight ride Revere only made it to Lexington where he stopped to warn patriot's leaders Samuel Adams and John Hancock. Revere then set off to ride another 7 miles further to Concord but on his was he was captured by British patrol. He soon managed to escape.
