Scientists create DNA tracking tags, might soon be used to track protesters

Scientists create DNA tracking tags, might soon be used to track protesters: "This DNA spray product has been developed with an eye on dousing thieves and burglars in order to track and identify them later. However, used as a spray fog on groups of people such as protesters suggests that it doesn’t matter whether you were peacefully protesting or breaking the law, you’re going to be sprayed, tracked, identified, and rounded up either way."