Dhaka, Aug. 16 -- Police in several Bharatiya Janata Party (BJP)-ruled states have reportedly used language - specifically Bengali - as a marker to identify undocumented Bangladeshi migrants.

The approach has led to some notable errors, including Delhi police listing "Bangladeshi" as a language, highlighting the confusion inherent in the process. In many cases, however, the exercise has resulted in serious consequences, with some Indian citizens being forcibly pushed across the border into Bangladesh.

Interventions by state governments or courts have enabled some individuals to return to their families in West Bengal. Nevertheless, the "pushback" of suspected migrants reflects an effort to bypass the often lengthy legal procedures involve...