Why is it adults or really all people group entire population 2geth

Well if you want to get into an evolutionary psychology perspective, the reason we group people together is because it’s how we survive. How else are we supposed to know whether people/animals/things/situations are dangerous or not? When we evolved, we didnt have time to sit around and evaluate the situation. Things were life and death, and if you were not able to create categories and react quickly then you were dead. Thus ending the continuation of your genes which lacked that ability. Now, as for lumping people together. People will dress, act, listen to music, and do things in groups. Is everyone part of that group the same, absolutely not. But the more a group is known for certain things, and the more the person looks like they fit into that group, the more likely it is for people to assume that the person does the things the group is known for. You’ve got two options here. Stop dressing/acting like the group you feel is being stereotyped negatively. Or stop listening to what people think of said group. Ranting about it is not going to get you very far. If it’s dark and there’s a big guy with ragged clothes and he’s unshaven, not very clean, and looks like he’s drunk, and I’m alone, yeah, I’m not going to sit around wait to see if the guy is harmless or not. Is it stereotyping, maybe. But it’s how people survive. And it’s how parents protect their kids.