generalizations can not be avoided, they are part of the way we understand and communicate with each other. Being able to generalize is what makes able to understand language and communicate (language theory). I think it's better to make positive generalizations about all people in general. If we perceive the world around us in positive way we are going to behave towards the world in a positive way and this is what we should do. Let's make the world a better place by not generalizing negative ideas about all people or certain group of people.