"A multiethnic society is necessarily antidemocratic" ? Ah, Artistotle, yeah he's an original Statist. Also his opinions were necessarily ignorant of the following 2,000 years' history
Just look at ethnically homogenous/isolationist/monoculture societies of the past 500 years vs diverse/cosmopolitan/inclusive ones. The former die out quickly; the latter are resilient
Not true, importing a whole bunch of low-IQ savages from a different continent that have no sense of personal boundaries or the willingness to assimilate with their native culture suck