Do people really think that they can judge other people ?

being black i am judged on the daily not neccesarliy all negative like im automatically cool i got a big one and i run fast **** like that..lol but i also negative ooh do u eat fried chicken or water mellon or rock out to disco with afro .. i could do the sometimes do judging people is sometimes necessary for survival but some judgment is ignorant like if your indian, people might ask you do you dance around your T P and and put your hand over mouth and say ahhh bahh ahh or do asian people walk around in nun chucks and practice karate with a calculators in there hand what do y'all think ? or that all spanish people are mexican and don't speak any english one time this mexican guy in a group interview was reading and said econ instead of icon cuz I is E in spanish he said i want to be an econ and a role model