A few years ago I was walking back from my brother in laws house just minding my own business.  As I was approaching a tree I saw something drop out of it and on to the ground about 10 feet ahead of me.  I walked a few feet further and realised it was a hornet that had attacked a cicada and was in the process of stinging it rendering it paralyzed.  It took about 60 seconds from the point of hitting the concrete to when the cicada stopped struggling, I could see the hornet's legs wrapped around the cicada and trying to hold it still.  The cicada was huge, 3 and a half inches long.  The hornet was about 4 inches.  When the cicada quit moving the hornet slowly lifted off and flew away at a greatly refduced speed.  My thought of the whole experience was, Damn, that was EVIL.  One moment an annoying loud and hated cicada, the next a hornet victim.