Taipei, June 14 Civic groups slammed China for its law on promoting ethnic unity and progress set to be promulgated on July 1, saying that it amounted to forced assimilation and cultural cleansing, local media reported on Sunday. The groups said on Saturday that the law will impose a single national identity, weaken the identities of non-Han ethnic groups and promotes the "integration" of different ethnic groups through policies across several sectors such as education, housing, population movement, community life, culture, tourism and development, Taiwan-based Taipei Times reported.Taiwan Economic Democracy Union convener Lai Chung-chiang stressed that the law amounts to…