The WalkFasters

A little-known underground cabal exists, a seemingly benign group of people from incongruous backgrounds scattered throughout the population in numbers that can only be described as "frightening". They spread their insidious message not with words nor overt actions, but with their gait; they are a continuing threat to both time & space, a nightmare of possibly-unintentional perception-skewing...
They are the WalkFasters, and they must be stopped.
Sure, it’s easy to brush them off as eager-beavers, these UpQuickers, but the sad truth of the matter is that they are forcing a unhealthy change in the general understanding of time vs. distance; these anti-dawdlers are speeding the whole world up one breezy, fast-paced step at a time.
You can hear them from their vernacular: "I’m right on time," they say, glorifying their clock-minded astuteness; "I’m never late," they say, a smug satisfaction setting fire to the kindling of my lazy sauntering; "I’m a punctual person," they say, flaunting their aggressive early-birding, subconsciously prepping for the inevitable, where all WalkFasters eventually end up in the twilight of their lives - trapped in the endless-loop of mall-walking madness.
I know of what I speak - they already count my girlfriend and my brother among their ranks...