This will cause people to start walking on the street in the same way as Fremen in Frank Herbert's Dune, by varying frequency and step length in order not to attract a (government) worm.
"Big Brother is watching. Learn to move indescribably."
It's like that anti-face-ID makeup that covers your face with dazzle patterns. It may work as a visible act of protest, but it won't actually protect your privacy.