Why are people assuming that Asian woman in viral BBC video of gatecrashing kids is the nanny?

A video of a BBC interview being interrupted by two small children has gone viral -- and people are loving it.

BBC correspondent Professor Robert E Kelly's live broadcast about the impeachment of South Korea's President Park Geun-hye quickly made its rounds on the Internet when his four-year-old daughter waltzed into the room followed by her nine-month-old brother.

The video was all kinds of cute and funny as the kids were oblivious to what was happening while their father struggled to keep a straight face.

A few seconds later his panicked wife, Kim Jung-a rushed into the room to quickly remove the kids.

The video has delighted thousands of people on social media but many people, including some media sources, assumed that Professor Kelly's wife was the nanny.

The video has since sparked a larger discussion on assumptions about race, gender and mixed-race couples.

"LOVED that BBC video. But do NOT assume an Asian woman with a white man is the nanny. Such subtle racism," tweeted netizen Natashya Gutierrez.

Some people defended their assumption saying that the panicked expression on Kim's face and the speed she handled the situation suggested she was the nanny and concerned for her job.

Others have hit back and said that any mother anxious to avoid disrupting her husband's interview would have acted the same way.

Globalisation has made our world smaller and mixed marriages have become more and more common.

It's time to reevaluate the way we see the world and get rid of such assumptions.