Bihari Muslims: These are those Muslim who speak Urdu/Hindi but not Bangla. These ppl moved to East Pakistan during partition. They lived happily for decades, Thing changed when West pakistan started war crime over Bengali speaking ppl. These Bihari Muslim stand for west Pakistan. They equally participated in War crimes in BD.
Aftr BD won the war and East+west Pakistan lost the war , Bangladeshis didn't recognized these traitors (Patriot for Pakistani, traitors for Bangladeshi) as Bangladeshi nationals. These ppl (Traitors or Patriots) thought that White skin Pakistani will call them to Pakistan, Pakistan call some 30,000 bihari Muslim, some 10,000 were shifted to Middle east. More than 10-15 Lakhs stayed in BD.
BD didn't gave them voting rights, They use to stay in Camps, They were not given citizenship. Then these Animals started crawling into India. Some (1000-10,000) went to Pakistan thru Rajsthan, rest all infested our motherland.