By “diversity” they mean “flood the country will hordes of moslems and assorted barbarians in order to destroy national soveriegnty, culture and identity”.
Just like by “tolerance of gays” they meant “dominance of perversion and perverts over everyone else, turn kids into prey for the perverts, and destroy freedom of religion”.
Exactly!
Tolerance & diversity are nothing but code words for pedophilia and ethnic cleansing.