Will racial characteristics increase or decrease in the future human society and why?

Racial signs will be smoothed out. We are already seeing this. But do not assume that races will disappear. The appearance of races is due to the long-term habitation of groups of people in a certain territory. So they got adaptations to environmental conditions. Nowadays, people can move around the globe. Representatives of different races give offspring. Also, people have learned to protect themselves from natural factors, so evolutionary adaptations no longer play a big role. They are not unnecessary though.