Judging people as individuals sounds all well and good, except when it’s a potential life-threatening situation.
In that case, a wise person pre-judges based on experience and prior knowledge until the “individual” proves otherwise.
Dress and demeanor are ultimately individual expression. I’m not likely to shoot a Black just because they are black any more than I’ll give a White a pass based solely based on color. Location and time are also factors to consider. I’m not particularly trusting.