I took some videos last weekend. The ladies were in full force of fighting off robbers. They are trying to get ready for the winter and have no space for thieves. If you are interested in seeing some serious security guard work, check the links to YouTube.
Video 1: a 5 second long video that shows the quickest way to get rid of a robber. https://youtu.be/5vdw3e3MrWs
Video 2: Watch them push away the wasp. https://youtu.be/D3YjSsCtr4U
Video 3: If the intruder tries to fight back, they will lose. https://youtu.be/1bfmOlEROt4
Interesting fact: Bees rob other hives because their source for nectar is scarce. They tend to attack other weak hives so that they have a better chance of surviving.