Protection from negativity or a trap with the demons

The Evil eye symbol is one that everybody must have seen atleast once in life. The famous blue, white, and dark blue circles, with the lighter shade that looks like an eye, Evil eye symbols come in the form of pendants, lockets, bracelets, and more.
In many cultures, the evil eye pendant is given as a form of protection to little kids, whereas in many others people are told to stay away from it as much as possible.