See the shocking viral video that appears to show a child of primary school age being encouraged into a racist, expletive-ridden Millwall chant by an older lady who sits beside him in a car.

The young boy, dressed up in a policeman’s costume complete with hat, bellows out the ‘song’ while the other passengers laugh.

The video cuts out after a final, highly offensive line, is uttered.

Police are said to be aware of the clip:

@CJagainandagain Officers have been made aware of this video. At this stage it is not known where or when the footage was filmed.

— Met Contact Centre (@MetCC) November 26, 2016