Did Modi wear black because of 'Kaala'?

Did Modi wear black because of 'Kaala'?

Narendra Modi on Wednesday put out his Yoga workout video on Twitter.  The video has since gone viral, as the Prime Minister of the country doing 'Asanas' and unique exercises is a sight to behold. 

What has caught many by a surprise is that Modi is seen wearing a black dress in the video.  What explains the choice of the colour?  Is it not white that it's expected of a Yoga practitioner?  It's believed by some that it's an endorsement of the film 'Kaala'.  "The PM in his fitness video is wearing all black in the morning. It's not even the Sabarimala season. I would see it an endorsement of a recent Tamil film," a journalist said.

This is puzzling.  Why would Modi wear black to endorse a movie that is purportedly against him, his party and the Hindu Nationalist ideology?