Racism vs Multiculturalism

Difference between racism and multiculturalism (diversity):

Racism is the belief that race is a primary determinant of human traits and capacities and that racial differences produce an inherent superiority of a particular race (wiki)

Multiculturalism is the acceptance or promotion of multiple ethnic cultures, applied to the demographic make-up of a specific place (wiki)

..yet, one of the main concerns of those racial advocates is the survival of their own races..they tend to believe that by absorbing others' cultures, one would lose his/her own..but, i beg to differ by questioning the fundamental principle of this argument, "how does one define 'losing his/her own self?' "  is it by the way one lives his/her life?? is it by the way he/she dresses up?? if those criteria are used to define the word "being oneself," i'm quite sure there is no races still existed in this world..we have to accept the fact that we are now living in an era of boundless world, in which one is exposed to many cultures and lifestyles..yet for me, as to ensure one's race to survive, one must be able to embrace the diversity embedded in his/her society so to improve oneself..it's a false statement, if one claims that his/her race is better than others..i believe, there is no races in this world superior than others..there must be some defects here and there..so, by taking/assimilating here and there, one can truly become a better person..perhaps, we can emulate the Japanese's meticulous working style, Americans' "never-to-say-die" attitude, Malays' politeness, Chinese' strong business mindset, and etc..but, to do so, we must make sure we are not living in any "racial" trap! the keyword is to "ACCEPTING DIVERSITY!"  ;)