Probably it is time for you to learn the plight of fellow Europeans then. The society is stewing for quite some time now, for example https://en.wikipedia.org/wiki/Yellow_vests_protests
The symbol has become "a unifying thread and call to arms" as yellow vests are common and inexpensive, easy to wear over any clothing, are associated with working-class industries, highly noticeable, and widely understood as a distress signal.
Rise of far right parties across Italy, Germany, Hungary, Poland, France and many other countries is another clear signal that EU's quality of life may not be great for everyone there.