Weird news - Spiders invade a town in US town in Tennessee

Weird indeed. One might have seen some B-grade horror movie that describes the assaults of spiders on a town. These could be deformed or mutant spiders that have grown large and aggressive and attack a small town. Causing huge casualties in the population, put a huge fear within the humans and eventually cause a fightback where some solution is found to get rid of the spiders. In the movies, these are all large spiders, that are very scary. In real life, there are small spiders that don't threaten the population of an entire town, but can be very venomous to individual people and can cause death in some cases.
This was a case out of the ordinary. People suddenly find a huge number (millions) of small spiders that have invaded a small town in the state of Tennessee in the US. These are small spiders that are individually non-threatening and non-poisonous, but it is very unsettling to see so many small spiders (and many humans have an inherent fear of spiders). Where did they all come from and how to get rid of them ? (link to article):

Experts say the presence of the spiders is not a bad thing. The spiders are coming from web, part of what Memphis Zoo Curator Steve Reichling said is a natural "mass dispersal" of harmless, beneficial arachnids. But residents are not happy. "Clean this area up and spray for these spiders and make it safe. There are kids running around. A spider could bite the kids or anything," Lewis said. On Twitter, the editor-in-chief of the Memphis Business Journal called for immediate civic action.