TRADISI NGELEGI MARGA DALAM MASYARAKAT KARO: PROBLEMA IDENTITAS INTEGRASI ATAU MULTIKULTUR (The Tradition of Ngelegi Marga in Karo Society: The Problem of Integrated or Multicultural Identity) Raharja Sembiring, Rut Debora Butar butar ETNOREFLIKA : Jurnal Sosial dan Budaya Vol. 10 No. 1 2021 DOI 10.33772/etnoreflika.v10i1.908