By 1978, William Julius Wilson (1935–) argued that race and racial classification systems were declining in significance, and that instead, social class more accurately described what sociologists had earlier understood as race.
Daɣ awatay wan 1978, William Julius Wilson (1935-) amǝšakkat as tawset d sistem tan n amiskat n tawseten fannazan hullan tolas taqqimen n addinat daɣ tamazduq iknanat afissar n awa ifhaman kel farak s tizart daɣ tawset