That person at work, or on the news, or on the street, or at the party, or wherever, who is so annoying is not annoying by virtue of their age, or their race, or their gender, or their nationality, or their class, or their politics or their whatever. They are annoying by virtue of being human. Some people are simply annoying. They are not annoying because of some artificial classification. It is their character, or their circumstance, which is unique to them.
Grouping large numbers of individuals by superficial similarities is a mistake of logic. It is lazy thinking to paint millions of people a certain way in the mind simply by virtue of a few annoying people with whom they share a superficial characteristic.